Josh Feemster was the lead singer for Mercy's Mark from the group's inception in 2004 until his departure in early 2007. It was announced in early 2008 that he, along with fellow Mercy's Mark alumnus Chris West and Craig West (Chris' brother), would be forming a new Southern Gospel quartet. The group debuted on May 9, 2008, and another former Mercy's Mark member, Brent Mitchell, filled in on that date as the group was still looking for a tenor, but the quartet did not continue much beyond that concert.
In early 2009, Josh joined the group N Harmony.
in late 2015, Josh joined Legacy Five as their new tenor singer, replacing Gus Gaches. He remained there until 2019.
In 2022, he joined his brother Tim Feemster, former Mark Trammell Trio tenor Eric Phillips, and former Old Time Gospel Hour Quartet/Mercy's Mark bass Christian Davis to form Quartet Classic, a group that traveled on a limited basis and mostly sang Southern Gospel songs from the 1970s and 1980s.
2016 Hymns & Classics (Custom Records/TMS-7633CD): When God Dips His Love In My Heart; Blessed Assurance; O, I Want To See Him; Wonderful Peace; How Great Thou Art; I Wouldn't Take Nothing For My Journey Now; The Longer I Serve Him (The Sweeter He Grows); Cleanse Me Medley; Take A Moment And Live; When They Ring The Golden Bells; Room At The Cross For You?.