Those beautiful funky bass lines are often lost behind that incessant banging from drummer, screaming guitar solos and the front man's narcissistic wailing.
Here are some ideas to get down to the real groove.
Use EQ to suppress high frequencies and enhance low frequencies, and PAN capabilities to focus on an instrument that is on one side of the stage, although bass is generally mixed in the center.
Pitch it Up
See our Baseline Isolation Tutorial to see how you can pitch up and EQ to isolate the baseline.
ReFrame allows you to "crop" sound. You can include or exclude the frequencies inside or outside the window. The vertical range represents the frequencies and the horizontal range represents the position on-stage. ReFrame includes a Solo Bass preset to start focussing on the bass line.