Lonnie McIntosh (July 18, 1941 – April 21, 2016), better known by his stage name Lonnie Mack, was an American rock, blues, and country singer-guitarist. As a featured artist, his recording career spanned the period from 1963 to 1990. He remained active as a performer into the early 2000s.
Mack played a major role in transforming the electric guitar into a lead voice in rock music. Best known for his 1963 instrumentals, "Memphis" and "Wham!", he has been called a rock-guitar "pioneer" and a "ground-breaker" in lead guitar soloing. In these, and other early guitar instrumentals, "he attacked the strings with fast, aggressive single-string phrasing and a seamless rhythm style". These instrumentals are said to have formed the leading edge of the virtuoso "blues rock" lead guitar genre and his early-'60s recordings in general are said to have established a "prototype" for the specific blend of blues, country, rock and jazz later known as "Southern rock".
According to Guitar World magazine, his early recordings influenced major rock-guitar soloists from the 1960s through the 1980s, "from Eric Clapton to Duane Allman to Stevie Ray Vaughan," and "from Ted Nugent to Mike Bloomfield." Guitarists who have specifically credited him as a major influence include Stevie Ray Vaughan, Jeff Beck, Dickie Betts, Ray Benson, Bootsy Collins, and Ted Nugent.
Mack is also considered one of the finer "blue-eyed soul" singers of his era.