You can find a good guitar score and compose your own music. Guitar has chords, but bass is missing two strings. You can push the missing two strings to the upper string and the same position, so you can improvise with your right hand. But if you want to record, you can improvise, so that the bass accompaniment of your composition will come out. If it's 44 beats, you can add flowers in four bars. It won't be ugly. Half of the flowers are five or eight degrees taller than before. I'm a guitarist. I've only learned the marching bass. This general question is best asked in the bass bar, because bass players usually play guitar specially, and few bass guitarists (folk songs) know this at present.