Claim: The list of official artists who recorded for Festival Mushroom Records includes approximately 121 artists of which, there are quite a few not only notable but a diverse group of artists,  including Rascal Flatts, Butthole Surfers, Coolio, Creedence Clearwater Revival, Dizzy Gillespie, Everlast, Lambchop, Paul Oakenfold, Seven Mary Three, Tom Jones.
Evidence: For the short-lived American record label, see Festival Records (American label). Festival Records (later known as Festival Mushroom Records) was an Australian recording and publishing company founded in Sydney, Australia, in 1952 and operated until 2005. "Rock Around The Clock" became the biggest-selling record ever released in Australia up to that time, and it established Festival as a significant emerging player in the popular music market. This Festival success was followed by four #1 hits in 1959 for another local act, Col Joye & the Joy Boys. Festival recorded or distributed some of the most popular Australian acts of the decade, including country music star Reg Lindsay. Festival played a major role in the Australian pop scene of the mid-to-late 1960s, and it competed strongly with its overseas-owned rivals EMI, CBS and RCA. Lindsay received citations and awards from Festival management and the Australian Record Industry in the 1960s and 1970s for outstanding record sales and his promotion of country music nationally and internationally] the Delltones, Warren Williams, Billy Thorpe, the Bee Gees, Ray Brown & the Whispers, Tony Worsley & the Fabulous Blue Jays, Jimmy Little, Noeleen Batley, Mike Furber, Olivia Newton-John, the Dave Miller Set, Johnny Young, Jamie Redfern, Wild Cherries and Jeff St John. 
From 2000 to 2010, they recorded for Disney Music Group's Lyric Street Records. Rascal Flatts is the debut studio album by American country music group Rascal Flatts, released on June 6, 2000 on Lyric Street Records. Butthole Surfers is an American rock band formed in San Antonio, Texas by singer Gibby Haynes and guitarists Paul Leary and Jonathan Grisham in 1981. Terry Tolkin, a friend and their East Coast booking agent, signed the band to Corey Rusk's then-nascent Touch and Go Records in Detroit. Following a final EP for Touch and Go—1989's Widowermaker—the band left their longtime recording partners to sign with longtime supporter Terry Tolkin at Rough Trade Records who had also brought them to Touch and Go, for a reportedly generous one-album deal. The following year, Butthole Surfers shocked many fans and critics by signing with the major label Capitol Records. Having resolved their dispute with Capitol, Butthole Surfers re-recorded most of After the Astronaut's songs for Weird Revolution, on the Hollywood Records/Surfdog Records imprint. In 2004, Haynes formed Gibby Haynes and His Problem, who released an eponymous album on Surfdog Records later that year.