In January 1970, they performed on "The Ed Sullivan Show" and released their rendition of "Come Together", which reached No. 21 on the R&amp;B chart. Their cover of "I Want to Take You Higher" by Sly and the Family Stone was also successful on the charts in 1970. Turner, who was a friend of Sly Stone, played guitar on Sly and the Family Stone's album "There's A Riot Goin' On" (1971). The release of "Proud Mary" in 1971 became Ike &amp; Tina Turner's biggest hit, reaching No. 4 on the "Billboard" Hot 100 and No. 5 on the R&amp;B chart. It sold more than a million copies, and won the duo a Grammy Award for Best R&amp;B Vocal Performance by a Group at the 14th Annual Grammy Awards.