Her style includes idiosyncratic in rhythm, line and harmony, and is characterised by an interest in perception which has led her to find potentials for interaction, response, and interpretation – such as field research at the Greenham Common anti-nuclear campaign (1986), setting up a women's radio station and street festival music in Galway with radical playwright Margaretta D'Arcy (1988), music for 'Didn't she do well?'
by Valerie Walkerdine, assessing the loss of roots of academic working class women (1990), and 'Home Birth – Your Choice' by Nicky Leap (1991).
In 1993, Maria, her husband Huw Warren and children left London and returned to Wales where they both had family roots.
Maria's collaborations include: Dragon Tongue Trio (2011) with Fred Thelonious Baker & Zoot Warren; A Hedgerow Song (2009) with Mark Lockheart - medieval tunes with contemporary improvised experimental explorations; Huw Warren's Tails for Wales UK tour/ Brecon Jazz Festival 2015, This is Now (Welsh Tour 2005), 100s of things a boy can make (2003 Babel Label), A Barrel Organ Far From Home (1997) Babel Label, BBC Radio 4 & European festivals); Caroline Kraabel Mass Producers 1998, June Tabor (trio tour with Huw Warren 1988; Always (Topic); Billy Jenkins' VOGC; Hot Club of Hackney Gypsy Orchestra 1991-3; Charles Hayward's Camberwell Now cult experimental rock band, touring Europe (mid 1980s) & recording Greenfingers 1986 (RecRec); Shelleyan Orphan (signed Rough Trade Records); Regular Music systems-rock band (Jeremy Peyton Jones), Regular Music LP (Rough Trade Records 1985); John Cage at 70 in London with the composer – performance of Music Walk filmed by Peter Greenaway (1982).
The forum is a hub for her sonic, visual, and olfactory arts expression using complementary therapy, teaching, modelling, and performance genres.