Joseph Kamaru was one of the most influential musician and artist in Kenya with a large music output of over 1,000 songs. His engagement with the music for more than fifty seventy (57) years brings topical issues, social commentary, political satire and deep Cultural (Gikuyu) traditions
His discography addresses issues including;-
-Songs for struggle of independence (Nyimbo Cia Mau Mau) : Mbaara Ndiri Mwago , Twathiaga Tukenete , Uhoro uria Maiguire , Mbaara ya Ndaka-ini....
-Love Songs : Marua ma Gathoni , Wendo wa Maitika , Tugatigithanio ni Gikuu.....
-Prophetic Songs : Kenya ya Ngai , J.M. Kariuki....
-Adults only songs (Kikuyu Folk Songs) : Nyimbo cia Muthunguci , Ndari Ikumi na inya , Tiga Kuhenia Igoti , Uthoni wa Mbathini , Ndari ya Mwalimu......
-Social and Political Commentary : Mundu Atige Nyina , Safari ya Japan.....
-Sacred songs :CAMP series