▁in ▁circa ▁ 1 9 6 5 ▁in ▁Philadelphia , ▁Pennsylvania . ▁Although ▁ 1 5 ▁women ▁have ▁been ▁members ▁over ▁the ▁years , ▁the ▁group ▁has ▁always ▁been ▁a ▁tri o . ▁The ▁current ▁line - up ▁consists ▁of ▁Val erie ▁Hol iday , ▁Helen ▁Scott ▁and ▁Fred die ▁Pool . ▁Hol iday ▁has ▁been ▁a ▁member ▁since ▁she ▁first ▁joined ▁in ▁ 1 9 6 7 , ▁while ▁Scott ▁has ▁been ▁a ▁permanent ▁member ▁since ▁ 1 9 7 6 , ▁having ▁been ▁in ▁the ▁group ▁from ▁ 1 9 6 5 ▁to ▁ 1 9 6 6 . ▁The ▁group ▁were ▁particularly ▁successful ▁in ▁the ▁UK , ▁ach ieving ▁ 1 3 ▁Top ▁ 5 0 ▁hit ▁singles ▁between ▁ 1 9 7 4 ▁and ▁ 1 9 8 5 . ▁ ▁The ▁original ▁members ▁were ▁F ay ette ▁P ink ney , ▁Sh ir ley ▁Por ter ▁and ▁L inda ▁Turner . ▁Por ter ▁and ▁Turner ▁were ▁soon ▁replaced ▁by ▁Jan et ▁Harm on ▁and ▁Helen ▁Scott . ▁The ▁line - up ▁from ▁ 1 9 6 7 ▁to ▁ 1 9 7 6 ▁was ▁P ink ney , ▁Val erie ▁Hol iday ▁and ▁She ila ▁Fer g us on , ▁who ▁would ▁go ▁on ▁to ▁sing ▁lead ▁on ▁most ▁of ▁the ▁group ' s ▁biggest ▁hits . ▁This ▁line - up ▁to pped ▁the ▁US ▁Hot ▁ 1 0 0 ▁as ▁featured ▁vocal ists ▁on ▁the ▁M F SB ▁single ▁" TS OP ▁( The ▁Sound ▁of ▁Philadelphia