There are at least five artists on last.fm by the name Jawbone: 1. Jawbone is the pseudonym of Bob Zabor, an American blues musician from Detroit. Jawbone ain't a virtuoso, he is a one man band, think raw blues, trash, harmonica fueled adrenaline pumped, think Hasil Adkins, Doo Rag, the Oblivians. The instruments he plays include the harmonica, the guitar and the tambourine. He deliberately aims for a lo-fi sound, akin to early blues recordings.