KISS bassist/singer Gene Simmons has extended an invitation to the band’s founding lead guitarist, Ace Frehley, to join the group during encores at some of the upcoming shows on KISS’ End of the Road farewell tour.

Simmons’ invite was part of a birthday message he sent via Twitter to Frehley, who turned 71 today.

“Happy Birthday Ace…And many more,” Gene wrote. “The invitations still stand. Jump up on stage with us for encores. The fans would love it.”

Frehley last performed with KISS in 2018, when he joined the band’s current lineup to play a few songs during the group’s annual KISS Kruise. That same year, Ace released the solo studio album Spaceman, which included two tracks on which he collaborated with Simmons.

In interviews around that time, Frehley said he wasn’t opposed to rejoining KISS to tour, but insisted the money had to be right.

Meanwhile, as reported last month, Frehley is slated to reunite with original KISS drummer Peter Criss to perform a few songs during the first day of Nashville’s Creatures Fest event, which runs from May 27 to May 29.

KISS’ next show on its End of the Road tour takes place on Thursday, April 28, in Curitiba, Brazil. The band begins a new U.S. leg of the trek on May 11 in Milwaukee.

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