I've been given a solo over Bminor7 to Bb7. I've found a few phrases I like within the chords, and especially like working with the D (3rd of both chords). My question is how would I go about getting away from just using the chord tones. It sounds pretty lame when I'm stuck going to the root of each chord on the 1 every bar. I know this is vague and open to creativity, but I'd just like to know how you guys would theoretically approach this progression. Any "safety scales/modes" you would use, other chords you would imply? Thanks for any input.