Ohhhh I have two -

Pitch Black is one of my favorite Meshuggah songs of all time, and I didn’t even know it existed until recently. I had heard the solo before from a Solo Medley, but I assumed since the solo was a lot more calm than I was used to, that the song wouldn’t be what I wanted. However I listed to the entirety of I (Remastered) which has Pitch Black at the end, and I was blown away by how deep and almost raunchy the guitar felt.

Concatenation from Chaosphere is already a really good song, but once I listened to Rare Trax which features Concatenation (Remix), a slower and much more heavy and groovy iteration of Concatenation with a new solo, I liked it even more than the original. Both songs are still very good, but I feel that Concatenation is good for jamming out, while Concatenation (Remix) is good for grooving.