- http://www.groovemonkee.com/en/products
- http://www.gieson.com/Library/projects/utilities/beatbox/
- http://www.indiana.edu/~emusic/361/drumpatterns.htm
- http://www.epinions.com/review/260_Drum_Machine_Patterns_no_author_listed/content_486277877380?sb=1
- http://www.digitaldjtips.com/2011/07/10-tips-for-perfect-beatgridding/
- http://www.soundonsound.com/sos/feb98/articles/rythm.html
http://www.fivepinpress.com/drum_patterns.html
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