<P> The release of "In and Out of Love" was successful, peaking at number nine on the Billboard Hot 100, number 16 on the R&B Singles chart, and number 13 on the UK Singles Chart in late autumn 1967 . The single also reached number 10 on the Cashbox chart . </P> <Ul> <Li> Lead vocals by Diana Ross </Li> <Li> Background vocals by Florence Ballard, Mary Wilson, and The Andantes (Jackie Hicks, Marlene Barrow and Louvain Demps) </Li> <Li> Instrumentation by Los Angeles musicians </Li> </Ul> <Li> Lead vocals by Diana Ross </Li> <Li> Background vocals by Florence Ballard, Mary Wilson, and The Andantes (Jackie Hicks, Marlene Barrow and Louvain Demps) </Li>

Who sang falling in and out of love