How can I restore a song I deleted?

How can I restore a song I deleted? I accidentally deleted a song I purchased but it won’t let me restore it. When I go into “Purchased” it shows “Play” next to all the other songs on the album except the one I deleted and it says “Purchased” next to it. The song is “I’m on the Way” by Gaiagishi and the Heroes of Eternity”

i just want it back in my library again. I worked hard writing the song and I was excited to see it and get it from iTunes! Thanks a bunch!