1) Hymn tune 
Rachie, frequently sung to the hymn I Bob Un Sydd Ffyddlon, is a Welsh hymn tune. The music was composed by Caradog Roberts, with lyrics by Henry Lloyd, who is better known by his Bard name Ap Hefin. The lyrics are a call to battle, as can be seen with the English translation. The hymn is still a popular choice at Welsh rugby matches. == Composer ...