Resolving the question: does music hurt or help memorisation?

Psychology Today explores the impact of music on memorisation. You can read the full article on their website. It begins:

"Most of us remember early school years where we were taught the memory trick of turning item names into a song. Lyrical rhymes seemed to help. In fact, one common mnemonic peg system uses rhyme to create numerical image pegs to which we can attach mental images of what we want to remember. The pegs are expressed, for example, for one as one/run, for two as two/zoo, for three as three/tree, and so on. Though I think there is a better number peg system, this one does show the power of rhyming."