Surprised I made this list so soon... Welp, the usual routine: more one album (potentially obscure) bands all displayed here, folks. Now I need to make time to listen to all of them...
I'm assuming the trademark for jam rock bands is that they prefer to record their material w/ the presence of an audience (except w/ this one)... Eh, I can dig it. And no, Frogwings will remain as my one exception as a studio album (refer to a prior list).
A compilation album w/ QP MC's on a few select songs used for remixing. Yeah, yeah, not really a "one album effort" for some. But if Nujabes gets credited for his Hydeout Production albums, this is (again) another exception for a "one album" band...