I'm currently learning a set for a new band. 99% original songs and the band leader/singer/songwriter doesn't always use the 4 bar structure. The stuff you don't have to learn. Where you can feel the changes. Usually learning a set is about patterns but this guy is using different structures, 6 bars instead of 4, sometimes 5!! I'm also contending with double length bridges, half verses, missing choruses and bridge sections that sometimes have rules and sometimes don't! I've written charts from the YouTube and mp3's supplied. The first gig, in 2 weeks, is the audition. I'll either join the band or it was just a dep. Failure is not an option so I'm playing the full set every day. I intend to know these songs better than the guy who wrote them and play them better than the last bassist. IMO it's a good band so it's worth the effort.