Testify (Isley Brothers song)

The Isley Brothers respond, imitating the singing styles of Ray Charles, James Brown, Stevie Wonder, Jackie Wilson and the Beatles.

[3] The Isley Brothers were one of the first groups that Hendrix recorded and toured with after relocating to New York's Harlem neighborhood from Nashville, Tennessee.

[4] Hendrix biographer Harry Shapiro describes his guitar parts for the song as "churning, hard-hitting rhythm chords and fluid blues-inspired solo breaks".

[5] Unterberger notes Hendrix's "spindly, roving electric guitar" in the opening section, and about ten seconds of "really wild, unhinged R&B soloing" later in the track.

American blues guitarist Stevie Ray Vaughan recorded the song for his 1983 debut album Texas Flood.