William H. Mann (born William Isaiah Erlichman; December 20, 1968) is a Grammy-winning American songwriter, record producer, creative executive, music publisher, and founder/CEO of independent music publishing company Green & Bloom/Topline, as well as chairman of management firm Manncom. In addition to Mann’s existing management and publishing holdings, in 2021 ,alongside partner, vet music executive, Benton James, he launched Proof Of Concept, a boutique talent development and creative media services firm which focuses on elevating the stories, brands and careers of creatives and corporates alike for tomorrow’s digital landscape. Later that same year, April 2021, in partnership with Warner Music Group’s ADA Worldwide, Mann and James announced the launch of joint venture label, icons+giants.
Over a 25-year period, Mann has written songs and/or produced records for/with an array of artists, including P!nk, John Legend, Celine Dion, Take That, Backstreet Boys, Cher, David Guetta, Kelly Rowland, Jessica Simpson, Sheryl Crow, Burt Bacharach, Bebe Rexha, Ty Dolla $ign, Ricky Martin, Anastacia, Art Garfunkel, Sting, Joss Stone, Robyn, Grover Washington Jr., Chaka Khan, Boyzone, Paula Abdul, Helene Fischer, Cher Lloyd, Paul Van Dyk, Hilary Duff, Jennifer Brown and Carole King.
Since penning his first top 10 hit in the UK for EMI in 1995 with "3 Is Family" by Dana Dawson, Mann has racked up several Top 40 hits around the world (including several Top 10s and number 1s), with cumulative album sales of over 110 million.