In the late 1960s, arranger, conductor, and multi-instrumentalist Hewson worked with James Taylor and pianist Herbie Hancock, along with arranging hits such as The Beatles "The Long And Winding Road", and Mary Hopkins "Those Were The Days". His fame as an arranger spread, and in the next decade he worked with artists including Supertramp, Diana Ross, Carly Simon, Art Garfunkel, Leo Sayer, Chris Rea, to name a few.
In 1976 he decided to produce, write, and play on his own records under the name RAH Band. The following year, the instrumental "The Crunch" (1977) on label Good Earth climbed into the UK Top 10. Three years later "Falcon" (1980) hit the Top 40 and started a long string of dance hits for the band.
Another track, "Clouds Across The Moon" (1965), with vocals by his wife Liz Hewson, gave him a second Top 10 single in the UK. Over the years the band have chalked up seven UK hits and have had records on a myriad of labels including DJM Records, KR, TMT Records, S.O.U.N.D. Recordings, RCA, Supreme Records, et al.
Hewson, who in the 1980s worked with artists Toyah and Five Star, and produced big hits for Cliff Richard and Shakin' Stevens, now concentrates on writing and producing music for UK television shows and advertisements.