So, I've recently quit a band (my first one.) During my time with said band we got several originals down. I wrote the basslines for these songs, which were written by others. Are these my basslines? When I join another band are these lines/progressions mine to use? Do I need to switch the key they're played in? If the guit/drums/lyrics are different are these still considered "originals"? If my old band recognizes them could there be issues other than them just being d-bags?