Concert tix as a christmas gift?

I wasn't sure what to get my gf for Christmas, I feel like I always give her material stuff that she might use once in a while or just gets stored. But yesterday I found out Empire of the sun is performing in Vegas next year, exactly a week after her birthday so I signed up for the pre-sale and managed to score tickets this morning, mind you this is one of her top 3 favorite artists. Are tickets considered a good gift? Given that the event is not until months from now.