Incomplete outlines of four series of lectures delivered by J. Lloyd Williams to classes at Aberystwyth, 1929, Bala, 1928-1929, Blaenau Ffestiniog, 1927-1928, and Trawsfynydd, 1928-1929. The topics include the history of Welsh music, congregational singing and folk singing. Two short essays by a member of the Trawsfynydd class, 1927, relating to the gypsies of Llangwm, are also included.