Currently touring the album Inviolate and joined on stage by Philip Bynoe (bass), Dante Frisiello (guitar), and Jeremy Colson (drums), Steve Vai delivered a set of primarily instrumental material for two and a half hours to a mesmerized audience this past Tuesday night at Danforth Music Hall. Vai’s solo material tends to be instrumental. Still, he brought out his monitor engineer Dani G to sing one song after some comedic dialogue about “weird things you find out about your crew on tour.” On this run of live dates, he found out Dani could sing operatic vocals, so “For the Love of God” was performed with Dani bellowing out operatic vocals over the song. While the instrumental electric guitar music genre might fall short on most people’s radars, Steve Vai’s resume as a musician is nothing sh...