Tesla revived this song in 1990 when they recorded a live, acoustic version for their album Five Man Acoustical Jam
, which was recorded at the Trocadero Theatre in Philadelphia on July 2, 1990.
The band was on tour with Mötley Crüe, opening for the rockers on the Dr. Feelgood tour. July 2 was an off-day, so Tesla booked the acoustic show and had each band member pick a cover song to perform. Lead singer Jeff Keith
picked "Signs," a song he grew up listening to in Oklahoma. His bandmates, however, didn't know the song, so Jeff had to round up a copy so they could learn it.
The song was the highlight of the performance, and the set was so well-received that it was released as an album, which they titled Five Man Acoustical Jam
as an allusion to the original artist. Released as a single ahead of the album, the song made #2 on the Mainstream Rock chart, but didn't crack the Hot 100. When the album started selling and MTV began airing the video, the song was re-released, making #8 on the Hot 100 in April 1991.