"River Deep – Mountain High" is a 1966 single performed by Tina Turner and credited to Ike & Tina Turner. Considered by producer Phil Spector to be his best work, the single was successful in Europe, peaking at number three in the United Kingdom, and peaking at number 16 in Australia though it flopped on its original release in the United States. Spector claimed to be pleased with the response from the critics and his peers,[2] but he then withdrew from the music industry for two years, beginning his personal decline.