In Black Square, you are given a choice of six notes, three are flat and three are round. There are no bonuses like they were in DJMP2, so choose your preferred shape.

Note	How to unlock
Andre Note	Play 451 Songs.
Bee Note	Play 351 Songs or Achieve 100000 Combo in Freestyle.
Chick Note	Play 551 Songs or Use Link Disc feature and Link with DJ Max Portable 1.
Pink Crystal Note	Play 140 Songs.
Youngbird Note	Play 995 Songs or Use Link Disc feature and Link with DJ Max Portable 2.