Since it was confirmed on the other thread that DT14 won’t have an instrumental, I noticed that half of their albums have at least an intrumental track, and the other half don’t.
Albums with an instrumental: WDADU, Awake, FII, SFAM, TOT, DT12, TA = 7 albums
Albums without an instrumental: IAW, SDOIT, Octavarium, SC, BC&SL, ADTOE, DT14 = 7 albums
*I’m not counting SDOIT Overture because it’s part of a big song, not an instrumental track by itself.