His music covered the teachings of life, promiscuity and sexual harassment in Kenyan politics and social culture.
[4] He was known for his friendship with President Jomo Kenyatta, but after writing a song condemning the murder of JM Kariuki, they ceased to be close.
[2] The height of his musical career was between 1975 and 1985 due to the release of adults-only cassettes, all dealing with Kikuyu folk songs.
[7] Initially he had a good relationship with president Jomo Kenyatta,[6] but after Kamaru wrote a song in 1975 condemning the murder of Josiah Mwangi Kariuki he fell out with him.
[5] Kamaru was once the chairman of the Kenya Association of Phonographic Industries (KAPI), and owned a church ministry in Nairobi.
[14] In April 2018, after a circulating death hoax, Kamaru confirmed his good health in an interview with the Daily Nation.
[14] In the interview, Kamaru said "God could not take me until I oversaw changes in the music industry and mentor upcoming musicians to get the best songs for their audiences and in return get a better pay".