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This URL links to hour 15,475 : minute 48 of Shepard's Pi.


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"Shepard's Pi" is one continuous song that lasts for 999,999,999 hours, or about 114 years.

Canton Becker

Canton Becker composed these sounds and an algorithm that orchestrates these sounds using the first one billion digits of pi (π). Each digit (3.1415...) determines four seconds of music, supplying the "turn signals" used to determine every musical expression.

Because the numbers in pi never repeat, each of the million hours of "Shepard's Pi" music are in fact unique. By fast forwarding to some distant moment in the song, you are virtually guaranteed to find yourself listening to something that nobody else – including the composer – has ever heard before.

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683164537258920941393448769786028597853333060853502220541114214730052970488567116145119826892037551470531016103117915301328332006286565398480520911368634809334262237544762953913035344937549369159056359910419141767298425879003373884883340622807701329661847539475939259968740192385285565379347815508675296609738415654947962793152582626439819703040451481923869967432807977492744783505522956087187395153109502673865283847917527486157856059171042988467178004481748016706847639710788826428191508960990425787654186385556211541569091452946367549004690445992486143737180205181499452665677313948238741418915002549766041925282654462446384807122025476619149590078656162313280785389602938429967081402834867624894315276274765156190000795461042494883275118460681225146707404076082358638474763596776619218841393246457484246585514590707993541603574231296370882641216983700793296695265424420590648469773378944192567423366491500865972947949181114163104785525143477925504425114225290866041747337674475890319061446476878674094358902178014887407450988376405443161246728715795550252691532952453349999813680452165124927948549141780242030411021806997862127542740548349501660

*** DEBUG SCORE ***


Our slice is 10 minutes.
@ @ -7:-40   Δ -400s   15,475:41:39   @ -400.0 π=13928125    109: found odd DESCENDING SEQUENCE109, requesting DRONE 
@ @ -7:-40   Δ 0s      15,475:41:39   @ -400.0 π=13928125    SEQ: setting sticky loop counter
@ @ -10:-16  Δ -155s   15,475:39:03   @ -556.0 π=13928086    432: found even DESCENDING SEQUENCE432, requesting DRONE 
@ @ -10:-16  Δ 0s      15,475:39:03   @ -556.0 π=13928086    SEQ: setting sticky loop counter
@ @ -13:-28  Δ -191s   15,475:35:51   @ -748.0 π=13928038    654: found odd DESCENDING SEQUENCE654, requesting DRONE 
@ @ -13:-28  Δ 0s      15,475:35:51   @ -748.0 π=13928038    SEQ: setting sticky loop counter
@ @ -29:-16  Δ -948s   15,475:20:03   @ -1696.0 π=13927801   567: found odd ASCENDING SEQUENCE567, requesting DRONE 
@ @ -29:-16  Δ 0s      15,475:20:03   @ -1696.0 π=13927801   SEQ: setting sticky loop counter
@ @ -32:-44  Δ -208s   15,475:16:35   @ -1904.0 π=13927749   876: found odd DESCENDING SEQUENCE876, requesting DRONE 
@ @ -32:-44  Δ 0s      15,475:16:35   @ -1904.0 π=13927749   SEQ: setting sticky loop counter
@ @ 00:00    Δ 1904s   15,475:48:20   @ 0.0 π=13928225       88 : PREROLL Found double 8, identified position 478 for INITIAL LOOP 2
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       88 : Sequencing LOOP loop-2/8 | duration 32.00 | loop true | volume -16 | fade 16 | reverse false | sticky 0 | connect(autoFilterLoop) 
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       99 : PREROLL Found double 9, identified position 494 for INITIAL LOOP 1
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       99 : Sequencing LOOP loop-3/9 | duration 44.00 | loop true | volume -12 | fade 16 | reverse false | sticky 0 | connect(pingPongLoop) 
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       876: Sequencing DRONE drone-2/7 | duration 32.00 | loop true | volume -7 | fade 16 | reverse false | connect(pingPongDrone) Future is 1 and Past is 5 
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       876: found odd DESCENDING SEQUENCE876, requesting DRONE 
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       888: *** (PRE-ROLL) Found triple 8, setting sampler velocity to 0.1 and sampler octave to 2 (period=1 sticky=0 stickywait=0) *** 
@ @ 00:00    Δ 0s      15,475:48:20   @ 0.0 π=13928225       SEQ: setting sticky loop counter
@ @ 00:04    Δ 3s      15,475:48:24   @ 4.0 π=13928226       765: found even DESCENDING SEQUENCE765, requesting DRONE (LIVE)
@ @ 00:04    Δ 0s      15,475:48:24   @ 4.0 π=13928226       SEQ: setting sticky loop counter
@ @ 00:08    Δ 3s      15,475:48:28   @ 8.0 π=13928227       654: found even DESCENDING SEQUENCE654, requesting DRONE (LIVE)
@ @ 00:08    Δ 0s      15,475:48:28   @ 8.0 π=13928227       765: Sequencing DRONE drone-2/6 | duration 32.00 | loop true | volume -7 | fade 16 | reverse false | connect(outputMusic) Future is 5 and Past is 5 
@ @ 00:08    Δ 0s      15,475:48:28   @ 8.0 π=13928227       SEQ: setting sticky loop counter
@ @ 00:12    Δ 3s      15,475:48:32   @ 12.0 π=13928228      654: Sequencing DRONE drone-2/5 | duration 320.00 | loop true | volume -8.8 | fade 16 | reverse false | connect(outputMusic) Future is 6 and Past is 6 
@ @ 00:40    Δ 27s     15,475:49:00   @ 40.0 π=13928235      ---: *** Got bored waiting for sampler to change, setting sampler velocity to 0.22 and sampler octave to 7 (period=1 sticky=0 stickywait=0) *** 
@ @ 00:48    Δ 8s      15,475:49:08   @ 48.0 π=13928237      55 : Sequencing LOOP loop-1/5 | duration 62.00 | loop true | volume -12 | fade 16 | reverse false | sticky 0 | connect(pingPongLoop) 
@ @ 00:48    Δ 0s      15,475:49:08   @ 48.0 π=13928237      555: *** Found triple 5, setting sampler velocity to 0.1 and sampler octave to 2 (period=1 sticky=0 stickywait=0) *** 
@ @ 01:04    Δ 16s     15,475:49:24   @ 64.0 π=13928241      11 : SILENCED LOOP loop-1/1 because futureNumber 5 appears in '5'
@ @ 02:36    Δ 92s     15,475:50:56   @ 156.0 π=13928264     00 : Sequencing LOOP loop-1/0 | duration 78.00 | loop true | volume -14 | fade 16 | reverse false | sticky 0 | connect(outputMusic) 
@ @ 02:56    Δ 19s     15,475:51:16   @ 176.0 π=13928269     ---: *** Got bored waiting for sampler to change, setting sampler velocity to 0.1 and sampler octave to 4 (period=1 sticky=0 stickywait=0) *** 
@ @ 03:00    Δ 4s      15,475:51:20   @ 180.0 π=13928270     44 : Sequencing LOOP loop-3/4 | duration 90.00 | loop true | volume -15.5 | fade 16 | reverse true | sticky 0 | connect(outputMusic) 
@ @ 03:12    Δ 12s     15,475:51:32   @ 192.0 π=13928273     99 : Sequencing LOOP loop-1/9 | duration 74.00 | loop true | volume -12.5 | fade 16 | reverse true | sticky 0 | connect(pingPongLoop) 
@ @ 04:40    Δ 88s     15,475:53:00   @ 280.0 π=13928295     99 : Sequencing LOOP loop-2/9 | duration 78.00 | loop true | volume -12.5 | fade 16 | reverse true | sticky 0 | connect(pingPongLoop) 
@ @ 05:00    Δ 20s     15,475:53:20   @ 300.0 π=13928300     66 : Sequencing LOOP loop-2/6 | duration 88.00 | loop true | volume -13 | fade 16 | reverse false | sticky 0 | connect(autoFilterPlusPingPongLoop) 
@ @ 05:04    Δ 3s      15,475:53:24   @ 304.0 π=13928301     ---: *** Got bored waiting for sampler to change, setting sampler velocity to 0.1 and sampler octave to 4 (period=1 sticky=0 stickywait=0) *** 
@ @ 05:04    Δ 0s      15,475:53:24   @ 304.0 π=13928301     567: found odd ASCENDING SEQUENCE567, requesting DRONE (LIVE)
@ @ 05:04    Δ 0s      15,475:53:24   @ 304.0 π=13928301     SEQ: setting sticky loop counter
@ @ 05:08    Δ 3s      15,475:53:28   @ 308.0 π=13928302     567: Sequencing DRONE drone-1/6 | duration 176.00 | loop true | volume -7 | fade 16 | reverse false | connect(outputMusic) Future is 5 and Past is 3 
@ @ 05:16    Δ 8s      15,475:53:36   @ 316.0 π=13928304     77 : Sequencing LOOP loop-3/7 | duration 72.00 | loop true | volume -12 | fade 16 | reverse false | sticky 0 | connect(pingPongLoop) 
@ @ 06:36    Δ 80s     15,475:54:56   @ 396.0 π=13928324     00 : Sequencing LOOP loop-3/0 | duration 86.00 | loop true | volume -16.5 | fade 16 | reverse true | sticky 0 | connect(outputMusic) 
@ @ 07:04    Δ 28s     15,475:55:24   @ 424.0 π=13928331     66 : Sequencing LOOP loop-2/6 | duration 64.00 | loop true | volume -12 | fade 16 | reverse false | sticky 0 | connect(outputMusic) 
@ @ 07:12    Δ 7s      15,475:55:32   @ 432.0 π=13928333     ---: *** Got bored waiting for sampler to change, setting sampler velocity to 0.7 and sampler octave to 5 (period=1 sticky=0 stickywait=0) *** 
@ @ 07:44    Δ 31s     15,475:56:04   @ 464.0 π=13928341     654: found even DESCENDING SEQUENCE654, requesting DRONE (LIVE)
@ @ 07:44    Δ 0s      15,475:56:04   @ 464.0 π=13928341     SEQ: setting sticky loop counter
@ @ 07:48    Δ 3s      15,475:56:08   @ 468.0 π=13928342     654: Sequencing DRONE drone-2/5 | duration 400.00 | loop true | volume -7.6 | fade 16 | reverse false | connect(pingPongDrone) Future is 2 and Past is 4 
@ @ 07:56    Δ 8s      15,475:56:16   @ 476.0 π=13928344     44 : Sequencing LOOP loop-2/4 | duration 76.00 | loop true | volume -12 | fade 16 | reverse false | sticky 0 | connect(outputMusic) 
@ @ 08:12    Δ 16s     15,475:56:32   @ 492.0 π=13928348     44 : SILENCED LOOP loop-2/4 because futureNumber 0 appears in '09'
@ @ 08:52    Δ 40s     15,475:57:12   @ 532.0 π=13928358     22 : Sequencing LOOP loop-1/2 | duration 68.00 | loop true | volume -14 | fade 16 | reverse false | sticky 0 | connect(outputMusic) 
@ @ 09:20    Δ 28s     15,475:57:40   @ 560.0 π=13928365     ---: *** Got bored waiting for sampler to change, setting sampler velocity to 0.1 and sampler octave to 2 (period=1 sticky=0 stickywait=0) *** 
@ @ 09:20    Δ 0s      15,475:57:40   @ 560.0 π=13928365     66 : Sequencing LOOP loop-2/6 | duration 80.00 | loop true | volume -12 | fade 16 | reverse true | sticky 0 | connect(outputMusic) 
@ @ 09:56    Δ 36s     15,475:58:16   @ 596.0 π=13928374     00 : Sequencing LOOP loop-2/0 | duration 96.00 | loop true | volume -13.5 | fade 16 | reverse false | sticky 0 | connect(autoFilterPlusPingPongLoop) 
@ @ 13:56    Δ 239s    15,476:02:16   @ 836.0 π=13928434     765: found even DESCENDING SEQUENCE765, requesting DRONE 
@ @ 13:56    Δ 0s      15,476:02:16   @ 836.0 π=13928434     SEQ: setting sticky loop counter
@ @ 24:24    Δ 627s    15,476:12:44   @ 1464.0 π=13928591    654: found odd DESCENDING SEQUENCE654, requesting DRONE 
@ @ 24:24    Δ 0s      15,476:12:44   @ 1464.0 π=13928591    SEQ: setting sticky loop counter
@ @ 25:48    Δ 83s     15,476:14:08   @ 1548.0 π=13928612    789: found odd ASCENDING SEQUENCE789, requesting DRONE 
@ @ 25:48    Δ 0s      15,476:14:08   @ 1548.0 π=13928612    SEQ: setting sticky loop counter
@ @ 26:20    Δ 31s     15,476:14:40   @ 1580.0 π=13928620    567: found odd ASCENDING SEQUENCE567, requesting DRONE 
@ @ 26:20    Δ 0s      15,476:14:40   @ 1580.0 π=13928620    SEQ: setting sticky loop counter
@ @ 32:08    Δ 347s    15,476:20:28   @ 1928.0 π=13928707    890: found even ASCENDING SEQUENCE890, requesting DRONE 
@ @ 32:08    Δ 0s      15,476:20:28   @ 1928.0 π=13928707    SEQ: setting sticky loop counter
@ @ 33:52    Δ 103s    15,476:22:12   @ 2032.0 π=13928733    890: found even ASCENDING SEQUENCE890, requesting DRONE 
@ @ 33:52    Δ 0s      15,476:22:12   @ 2032.0 π=13928733    SEQ: setting sticky loop counter
@ @ 35:04    Δ 71s     15,476:23:24   @ 2104.0 π=13928751    098: found odd DESCENDING SEQUENCE098, requesting DRONE 
@ @ 35:04    Δ 0s      15,476:23:24   @ 2104.0 π=13928751    SEQ: setting sticky loop counter

*** Statistics ***
drone-1/6	1
drone-2/5	2
drone-2/6	1
drone-2/7	1
loop-1/0	1
loop-1/2	1
loop-1/5	1
loop-1/9	1
loop-2/0	1
loop-2/4	1
loop-2/6	3
loop-2/8	1
loop-2/9	1
loop-3/0	1
loop-3/4	1
loop-3/7	1
loop-3/9	1
sampler 2 A2 	8
sampler 2 C#2 	7
sampler 2 C2 	5
sampler 2 D#2 	2
sampler 2 D2 	2
sampler 2 E2 	7
sampler 2 F#2 	9
sampler 2 F2 	8
sampler 2 G#2 	2
sampler 2 G2 	3
sampler 4 A4 	7
sampler 4 C#4 	8
sampler 4 C4 	5
sampler 4 D#4 	5
sampler 4 D4 	5
sampler 4 E4 	10
sampler 4 F#4 	6
sampler 4 F4 	6
sampler 4 G#4 	6
sampler 4 G4 	6
sampler 5 A5 	1
sampler 5 C#5 	2
sampler 5 C5 	3
sampler 5 D#5 	1
sampler 5 D5 	7
sampler 5 E5 	7
sampler 5 F#5 	3
sampler 5 F5 	3
sampler 5 G#5 	3
sampler 5 G5 	2
sampler 7 F7 	1
sampler 7 G#7 	1