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) chart for the following week at No.42; by then Black's version had reached No.10, ascending in the subsequent two weeks to No.2 and then No.1, while Warwick's version concurrently ended its chart run with two weeks at No.47. On the chart dated 29 February 1964, besides Black's "Anyone Who Had a Heart" at No.1 for the first of three weeks and Warwick's version in its final chart week at No.47, the UK Top 50 featured a third version of "Anyone Who Had a Heart" as the version by Mary May made its one-week appearance at No.49. On 25 April 1964,