Ripple was an American funk band from Michigan. The group was signed to GRC Records in the 1970s, and scored several hit singles, the biggest of which was "I Don't Know What It Is, but It Sure Is Funky".
These are photos from concerts where Ripple played, so they may be of other bands that played the concert as well.
Tower Of Power / graham central station / Ripple May 10, 1974 Philadelphia, Pennsylvania, United States Uploaded by Zimtrim