Contacted Yoko Shioya-san.
Read her interview.
http://www.performingarts.jp/J/pre_interview/0709/1.html (Japanese)
Watched the video about Dumb Type.
dumb type S/N 1/2
dumb type S/N 2/2

Watched the following tutorials.
Did You Know #35: List Objects

24 tutorials from
Max MSP Tutorial 02a2: Simple Melody Generation [2]
Max MSP Tutorial 04b1: The [buffer~] object

Checked a rapper called 鎮座DOPENESS.