Richard Pierce Havens (January 21, 1941 – April 22, 2013) was an American singer-songwriter and guitarist. His music encompassed elements of folk, soul (both of which he frequently covered), and rhythm and blues. He had a rhythmic guitar style (often in open tunings). He was the opening act at Woodstock, sang many jingles for television commercials, and was also the voice of the GeoSafari toys.

Source: Wikipedia (https://en.wikipedia.org/wiki/Richie_Havens)