Since Lesh had never played bass, it meant that to a great extent he learned "on the job", yet it also meant he had no preconceived attitudes about the instrument's traditional rhythm section role. In his autobiography, he credits Jack Casady (who was playing with Jefferson Airplane) as a confirming influence on the direction his instincts were leading him into. While he has said that his playing style was influenced more by Bach counterpoint than by contemporaneous rock and soul bass players, one can also hear the fluidity and power of a jazz bassist such as Charles Mingus or Jimmy Garrison in Lesh's work, along with stylistic allusions to Casady. Lesh has also cited Jack Bruce of Cream as an influence.