I imported some albums to iTunes and the data wasn't correct.

For example, 1 song was imported when there should have been 2 (1 for Album X and 1 for Album Y).

Can I copy song A and just paste it into Album Y? Thereby having the song on 2 different albums?

If I right-click on a song in iTunes there is a copy option, however I can't paste it anywhere else in iTunes.