| I agree with both of the suggestions offered.
In my experience, if you have the luxury of rehearsal time, one of the best things you can do for yourself is to learn your axe front and back.
So lots of scales (try major and minor in all keys, two or three octaves), Arpeggios, and one thing that really helps with both technique and endurance is doing plenty of work on classical etudes. Simandl, Rabbath, Reinshagen, Nanny, pretty much anything you can get your hands on.
Try and work on tunes away from your instrument as much as you can, to maximize shedding time purely on your instrument. That way, you can learn theory, and then applications are much easier, because you'll really understand your instrument because of all the time you've spent working on learning the 'board, as well as intonation and stamina.
When you do this, ideally, you won't waste valuable time with your instrument learning theoretical stuff, but you'll still internalize it. This allows you to be able to play anything that pops into your head, and learning theory, licks, etc, are pretty much for the purpose of expanding your ear and musical vocabulary. |