Kalin Petrov was born 1970  in Sofia and graduated in piano at SMU "L. Pipkov" in 1989, he continued at the Bulgarian State Conservatory, where he graduated in 1994 with a degree "Master".

Subsequently, playing piano and keyboards with different bands and artists such as Gentle Groove, PIF, Grafa, Mariana Popova, Dessy Dobreva and others. Participated in the creation of the band Latino Partizani, where he played two years. Since 1999 he is playng in the band  Sleng, where he participated in creating the album "Blue" and "Every Day", including their own compositions. After 2000, he plays in the "Classmates" with Hilda Kazasyan, as author and performer. Kalin Petrov is a member of AKAGA since 2007.