I am lucky because I am in a band with people who are my friends first and foremost, and co-musicians somewhere after that. We are 2 guitarists, drummer and me (bass). We tend to stretch tunes a bit and get outside now and then; in fact, I am the one who usually tries to keep the original thread of the tune close by while the others are cuttin' loose. I have had the experience of watching the guitarists go off into outer space while I hung with the simple bass part until I could stand it no longer, and to make a point, I would start playing lots more notes and syncopations and see if they would get the idea to get back to the tune. But it backfired! They loved it, and encourage me to play like that more often! Like Daffy Duck has been known to say, Ya' never know where you're goin' 'till ya' get there.