I love Ghostbusters, but I haven't actually played it a ton. The song I pick the most in LRB is Summer of '69. It is LRB's most epic classic rock song, IMO.
(RB1's is Won't Get Fooled Again, RB2's is either Painkiller or Round and Round. I normally would've said Carry On Wayward Son but the number of times the RB2 World Tour and people online made me play it makes me avoid that song like the plague now.)