since 2009 mm steer has been directing the cherubim music trust, a charity that loans professional-quality orchestral instruments to advanced music students, aged 15–25, who cannot afford one that matches their ability. in 2013 he formed the cherubim young musicians into an orchestra to perform the music of william beckford; and in the following two years he directed cherubim mozart weekends in tisbury featuring cherubim young musicians as soloists.