Hi all, I've been playing bass about 3 years and going to local blues jams for a few months. I do fine at the jams when the song has standard I-IV-V changes. But I'm struggle when I don't know the song's chords. For example, a singer will come up, glance back at me, say "Moondance in A minor" and then kick off the band. It's even worse when I've never heard of the song before. Sometimes, the guitar player will try to teach me the song in 15 seconds. Now if I had a written-out chart and 25 mins, I'm sure I could get it. But the set would be over by then. Now I do see more experienced bassists learn songs just like that....in 15 seconds. How do they do it? More importantly what do I need to do during my practice sessions to be able to do this? How do I break this skill down into the incremental steps I need to know? Appreciate any advice.