Customized version of http://www.thingiverse.com/thing:53235

Created with Customizer! http://www.thingiverse.com/apps/customizer/run?thing_id=53235

Using the following options:

snapAxisSlack = 0.35
crankExtraH = 4
diametral_pitch = 0.6
crankAxisCutAwayH = 4
baseFrequC0 = 16.3516
GENERATE_CRANK = 1
$fn = 32
gearH = 3
GENERATE_PULLEY = 1
midBigTeeth = 20
gear_gap = 1
epsilonCSG = 0.1
gammaTooth = 1.875
E_PLA = 8240000
FOR_PRINT = 1
pulleyH = 10
midSmallTeeth = 8
gear_min_gap = 0.1
noteAlpha = 5
GENERATE_CRANK_GEAR = 1
GENERATE_MID_GEAR = 1
pinD = 1.5
pinH = 3
pins = XoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooooooooooooXoooXooXoooooooooooooooooooXoooXooXoooooooooooooooooooXoooXooXoooooooooooooooooooXoooXooXoooooooooooooooooooXoooXooXoooooooooooooooooooXoooXooXoooooooooooooXooXoooXoooooooooooooooooooXooXoooXoooooooooooooooooooXooXoooXoooooooooooooooooooXooXoooXoooooooooooooooooooXooXoooXoooooooooooooooooooXooXoooX
MusicCylinderNameDepth = 0.6
midAxisHolderH = 3.3
pulleySnapL = 1.2
pteethMinD = 1.5
ro_PLA = 924
pulleySlack = 0.4
teethHolderH = 5
teethHolderW = 5
crankAxisHolderH = 1.55
crankGearAngle = 15
MusicCylinderNameFontSize = 8
musicAxisHolderH = 3.4
MusicCylinderName = test song
GENERATE_MUSIC_CYLINDER = 0
teethNotes = C 0C#0D 0D#0E 0F 0F#0G 0G#0A 0A#0B 0C 1C#1D 1D#1E 1F 1
MusicCylinderNamePosition = 0
crankAxisR = 3
crankDirection = 0
gear_tolerance = 0.1
wall = 2
axisSlack = 0.3
midGearAngle = -5
crankSlack = 0.2
pinNrY = 35
pinNrX = 13
crankLength = 18
crankTeeth = 8
GENERATE_CASE = 1
musicCylinderTeeth = 24
gear_hold_R = 4
DEBUG_GEARS = 0
MusicCylinderNameFont = write/Letters.dxf