[8] The company was established as the first private equity group dedicated to music royalty investments, that brought capital to artists such as The Beatles and The Offspring.

[9] In 2013, Gruss acquired the publishing rights to the song "Land of a Thousand Dances" by Chris Kenner which generated average royalties of $200,000 a year for the company.

[11] In 2018, Gruss acquired the music publishing company, Carlin America and the rights to over 150,000 songs for $245 million, including the hit "Total Eclipse of the Heart" written by Jim Steinman.

[18][19] In May 2021, Gruss acquired the Swedish label Telegram Studios whose master recordings and catalogue included Estelle, System of a Down’s Serj Tankian, Throwing Muses, Ziggy Marley, and Surfer Blood.

[1] He has extensively toured with the band and opened for Buckcherry, Disturbed, Black Label Society, Sevendust, Shinedown, Nonpoint, The Cult, Tesla, Pop Evil, and Candlebox.

[23] Gruss has been the Reissue Executive Producer on four of the London-based rock band Bush albums including The Science of Things, Deconstructed, Razorblade Suitcase and Sixteen Stone.