Cyfres BA4. - Commissions and invitations,

Correspondence, 1950-2008, mainly relating to the commissioning of new works, performances and invitations to conduct, adjudicate and give lectures. They include one general group and fourteen specific groups of correspndence with radio and televison companies, the Welsh Arts Council, the Associated Board of the Royal Schools of Music, Welsh National Opera, the National Eisteddfod, orchestras, festivals, record companies and publishers, and correspondence relating to music competitions.