The authorship of Quatuor Principalia Musicae , a treatise on music , is generally attributed to him .
Simon Tunsted ( died 1369 ) was a Franciscan friar , theologian , philosopher and musician .
The authorship of Quatuor Principalia Musicae , a treatise on music , is generally attributed to Simon Tunsted .
Simon Tunsted ( died 1369 ) was a Franciscan friar , theologian , philosopher and musician .