The Mixed Metals  percussion ensemble was formed in 1999 for a Derbyshire Singers performance of African Sanctus by David Fanshawe, they have continued to perform percussion orientated ensemble and choral compositions across the country. Specialising in piano and percussion reductions of: Carmina Burana, Chichester Psalms, St Nicholas etc, they have also given many world premieres of works by Peter R. Birkby  (http://www.prbpnews.info). He also has a very interesting blog! https://ddodv.wordpress.com/