I take weekly bass lessons, but I'm going to be stopping for June and July because I have an erratic schedule throughout those two months, including family vacations, etc. However, I will be participating in two music camps, playing bass with other musicians during these. I've made a lot of progress since before I started lessons, and I don't want to backslide. Are there any songs/techniques/elements I should work on to keep my progress up? I've been taking lessons for two or three months now.