[1][2] The Wesley Trio formed early in 1964 with Ross, Wright and Peter McKeddie on vocals; they were renamed The Groop at the end of the year.
[2] Cadd was inducted into the Australian Recording Industry Association (ARIA) Hall of Fame in 2007, for his work with The Groop, Axiom and as a solo artist.
[1][3] In a 2002 interview, Bruce admitted that he had only been in a support act, The Hill City Skiffle Group and never actually in Dave Clark's band.
[5] They were assisted by positive reviews from Ian "Molly" Meldrum writer for national pop magazine Go-Set who had earlier been their roadie.
[1][3] In August 1966, founders McKeddie and Bruce left, but instead of disbanding the Rhythm section of Ross and Wright invited Don Mudie (ex–Sherwood Green) to join on guitars.
[10] The band won a trip to UK from the 1967 Hoadley's National Battle of the Sounds in July,[1][4] with "When I Was Six Years Old" written by Cadd and Ross.
The Groop arrived in the UK as Paul Jones' cover of "When I Was Six Years Old" was released and they secured a deal with CBS in England, then toured there and in Germany.
[4] Band members had written most of their hits in Australia, but CBS decided they would cover an Italian ballad, "What's The Good of Goodbye", which failed to chart.
[1][2][3] Cadd and Mudie were the primary songwriters for Axiom including their three hit singles, "Arkansas Grass", "A Little Ray of Sunshine" and "My Baby's Gone".
[1][10] Cadd then pursued a solo career as a performer, songwriter, record producer, label owner and film and TV score composer.
[11] The Groop reformed for a national tour from late 1988 to early 1989, with members from both versions: Bruce, Charles, McKeddie, Mudie and Wright; plus Rob Glover on bass (ex-Sports) and Tweed Harris on keyboards (ex-Groove).