How to Make a One-Bar Bassline into a Two-Bar Bassline - Dan Lutz Dan Lutz "Lut'z Going On" - Live at the Aguilar Artist Loft L.A. session bassist Dan Lutz throws down some stone-cold grooves Two bass players, different bass lines for the same drum groove.
One may also use rhythm to make a 1-Bar figure into a 2-Bar figure or 4-Bar figure. Back when I was way more serious (in the shed)...I noticed our drummer would move things around. If I didn't count, he would throw me off the train. He tells me, he can hear (pretty easily) I'm playing Bar-by-Bar. Maybe great for an R&B/Dance band...but this band was doing mostly originals (with sections of quasi-free improvisation) + revamped Jazz covers. He wanted to hear me playing/thinking in 2-Bar or even 4-Bar figures...with no discernible Bar Line. An aside, learning Afro-Cuban/Latin tumbaos helped. Eventually, he wanted me playing the 1st Bar with the piece ending with the last Bar. Band broke up...I never got there.