Luaka Bop releases a historic compilation of 70s secular gospel as part of the label’s World Spirituality Classics Series on 13 September.Compiled by soul DJ Greg Belson, it features artists such as The Triumphs, The Gospel I.Q.’s and The Floyd Family Singers, released on labels such as Lovie D, Du-Vern, Senoj and Arc-Bel-Kno.