Bunny Sigler around 1970 Sigler began working as a songwriter with Kenny Gamble and Leon Huff at Philadelphia International Records. In partnership with writer Phil Hurtt, Sigler wrote songs for the O'Jays including "Sunshine" and "When the World Is at Peace". He also wrote songs solo and with Gamble, and his compositions were recorded by many of the Philadelphia International artistes. He discovered a group, Instant Funk, and began again recording as a singer. He had his first chart success for six years in 1973 with a remake of the Bobby Lewis hit "Tossin' and Turnin'" (#38 R&B, #97 pop), and had
Anyone Who Had a Heart (song) the Land of Make Believe" and included session drummer Gary Chester. According to published reports, Warwick nailed the tune in only one take – though an alternative remix of the take appears on a compilation album released in 1976 by Springboard International. Released on the Scepter label in November 1963, "Anyone Who Had a Heart" broke in Detroit, where it reached No.1 that December. The track became Warwick's first Top Ten single in January 1964, peaking at No.8 on the "Billboard" Hot 100 and the "Cash Box" Pop 100 that February, also reaching No.6 on the "Cash Box" R&B chart.