The group was formed in 1976 as a splinter of Baba Gaston’s Baba National. Its original bandleader was Bwamy Walumona (Le Capitaine). The group was at the height of its popularity in the '70s and '80s with hits like Embakasi, Maindusa, Walter, Safari ya Mangelepa, Odesia, Dracula and Maboko Pamba. Bwammy Walumona left Les Mangelepa in 1986 after becoming a born again Christian. The band has since confronted further splits and line-up changes. The group was still performing as of 2011, led by Kabila Kabanze Evany.
A review of their 2018 CD, Last Band Standing, says "Their weekly residency at Club Vibro, playing a typical 10 p.m. to 6 a.m. gig, is quite a feat of endurance for the 70 year olds but conducive to sharpening their tunes to pinpoint focus."
- Richard Trillo: The Rough Guide to Kenya 8th Edition, Rough Guides 2006, ISBN 1-84353-651-X
- The Standard, July 2, 2009: Legendary Mangelepa marching on, 33 years later
- Daily Nation, Lifestyle Magazine, January 24, 2009: Jua Cali and Delph ready to party in Cologne
- "Best of 2018". www.muzikifan.com. Retrieved 1 September 2019.