tune noun definition in Pieces of music topic from the Oxford Advanced Learner's Dictionary

tune

 noun: Pieces of music topic
[countable] a series of musical notes that are sung or played in a particular order to form a piece of music He was humming a familiar tune. I don't know the title but I recognize the tune. It was a catchy tune (= song). a football song sung to the tune of (= using the tune of) ‘When the saints go marching in’