Kelly Marlow was born in Santa Monica, California, and was raised by two sets of hippie parents who introduced him to the best rock music ever made. His first memory is hearing Led Zeppelin's "Whole Lotta Love" cranked up in the living room while the adults were having a party. He also recalls singing into a hairbrush and playing his tennis racket as a guitar pretending to be Elvis at a very young age.

Kelly wrote his first song at 10 and joined his first band at 15. In his late teens he started playing in Hollywood, in such iconic places as The Whiskey-A-Go, Troubadour, Rainbow, Viper Room, House of Blues, Knitting Factory and Country Club. He was co- founder and frontman/bandleader in the bands The Alley Brats, Suicide King, Souls on Fire, Rotor and Marlow, and has jammed with everyone from street musicians to famous rock stars. His experience in the music business includes writing, producing and performing on his own records, starring in and giving interviews for TV, radio as well as online podcasts. He has written for a music magazine and even had a role in a B-movie while living in Sweden. He co-owned the FM radio station KISS FM in Gran Canaria, Spain, and later moved it to Sweden, where it became WeRock FM. In 2025, Kelly signed a distribution and publishing deal with Tempo Digital, for his original music to be licensed and sold online.

Kelly has lived in Hollywood/Burbank area, California; in Las Vegas, Nevada; in Malmö, Sweden; in Oslo, Norway – and now he is based in the Spanish Canary Islands, where he and his girlfriend call Gran Canaria their home. Here he has become a local celebrity, doing the Kelly Marlow Rocks show (AC/DC to ABBA) 350 times a year, and thus supports himself 100% through his craft and his own brand. His merchandise includes hoodies, T-shirts, tank tops, beach/shopping bags, posters, online music, CD's, USB-sticks etc. You can also book him for private/special events.