<P> "Sumer Is Icumen In" is featured throughout the series . At times it is heard as background music at parties . In "The Betrothal," Sir Richard's son plays it on his flute while his betrothed sings it . In the episode "Carlotta," Little John sings it to his sweetheart . In "The Path of True Love," Marian sings it to stall Sir Charles . In one of its most prominent uses, Robin forces a group of soldiers to sing it . </P> <P> The Merry Men perform the soul cake song in "The Thorkil Ghost," with Derwent singing a solo . </P> <P> Carl Sigman wrote the words and music for the theme song which was sung by Dick James . The song is still fondly remembered: </P> <P> Robin Hood, Robin Hood, Riding through the glen Robin Hood, Robin Hood, With his band of men Feared by the bad, Loved by the good Robin Hood, Robin Hood, Robin Hood He called the greatest archers to a tavern on the green They vowed to help the people of the king They handled all the trouble on the English country scene And still found plenty of time to sing </P>

Who sang the theme song for robin hood