I often can’t work to their music because my brain fills in their vocals for me, which is sometimes too distracting.

Can relate 100%. I have audio processing oddities that make understanding lyrics difficult. With how many times I’ve listened to their albums (1500 times in a row for Palimpsest! I’ve got the Last.FM receipts for it, even) I know the lyrics mostly by heart. Instead of my brain being distracted trying to comprehend it gets distracted trying to sing along. Thus, instrumental for getting work done.

Also I can’t keep my boys Between the Buried and Me out of this post any longer. Suuuuuuuuch a fucking band. The new album rules, too!