His father, Johnny Mensinger, was of Jewish German descent and was a local big band leader who played around the area as well as on cruise ships from the United States to Europe and back.

[1][2][3][4] Eric's brother Jon Mensinger was a principal dancer for the Mark Morris Dance Group in New York.

[5] Young Eric began playing drums from an early age, and was inspired by bands such as Humble Pie, the Who, Led Zeppelin, Black Sabbath, the Beatles and Queen and drummers such as John Bonham, Keith Moon, Cozy Powell, Roger Taylor, Bill Ward, and Buddy Rich.

Singer, who had performed with Paul Stanley on his club tour along with Bob Kulick two years earlier, was hired and debuted with the band on the album Revenge, on which he was originally slated to fill in on some tracks while Eric Carr recuperated from heart cancer.

Singer debuted in full "Catman" makeup and costume for the first time on the tour, which caused some controversy as the persona had previously been used only by Criss.

In October 2012, Kiss released their 20th studio album Monster which includes a track called "All for the Love of Rock & Roll" sung by Singer (written by Stanley).

He performed and recorded with his band ESP, featuring, among others, his former Kiss bandmate Bruce Kulick and former Mötley Crüe lead singer John Corabi.

Singer has also played in the band Avantasia, replacing drummer Alex Holzwarth after a guest performance in the song "Into the Unknown" from the album The Metal Opera Part II.

In 2015 Singer was elected to the jury of watchmaking's highest awards, the Grand Prix d'Horlogerie de Genève (GPHG).

His keen eye to mechanics and artistic design encouraged the GPHG to invite him to join the rotating group of 26 jurors in Geneva this November as they select the best watches of 2015.