No holds barred when it comes to writing a good song. Tautology can work fine and well in a song also . A redundancy in prose like "fine and well" sounds rotten ,but in a song it can strenghten a meaning while supplying the necessary syllables to fit a rhymne .As in The Rising of the Moon which contains the lines.

"I bear orders from the captain make your ready quick and soon /for the pikes must be together by the rising of the moon."