Mahal leads with his thumb and middle finger when fingerpicking, rather than with his index finger as the majority of guitar players do. "I play with a flatpick," he says, "when I do a lot of blues leads." Early in his musical career Mahal studied the various styles of his favorite blues singers, including musicians like Jimmy Reed, Son House, Sleepy John Estes, Big Mama Thornton, Howlin' Wolf, Mississippi John Hurt, and Sonny Terry. He describes his hanging out at clubs like Club 47 in Massachusetts and Ash Grove in Los Angeles as "basic building blocks in the development of his music." Considered to be a scholar of blues music, his studies of ethnomusicology at the University of Massachusetts Amherst would come to introduce him further to the folk music of the Caribbean and West Africa. Over time he incorporated more and more African roots music into his musical palette, embracing elements of reggae, calypso, jazz, zydeco, R&B, gospel music, and the country blues—each of which having "served as the foundation of his unique sound." According to "The Rough Guide to Rock", "It has been said that Taj Mahal was one of the first major artists, if not the very first one, to pursue the possibilities of world music. Even the blues he was playing in the early 70s – "Recycling The Blues & Other Related Stuff" (1972), "Mo' Roots" (1974) – showed an aptitude for spicing the mix with flavours that always kept him a yard or so distant from being an out-and-out blues performer." Concerning his voice, author David Evans writes that Mahal has "an extraordinary voice that ranges from gruff and gritty to smooth and sultry."