We're getting MSTY-erious with the new MSYT app and celebrating Halloween. All you have to do is send us your most creative Halloween themed MSTY.

If you haven't heard, MSTY is an awesome music messaging app that allows you to send messages to your friends - hey, that's us - using music, photos and a caption.

All you need to win is the MSTY app -- you can get it at the Apple App Store or Google Play -- get all dressed up in your Halloween costume and send us a message.

All you need to do to get MSTY-erious is send us your most creative Halloween MSTY to (719) 285-7625. You have until Friday, October 30 at 5 p.m. when the Mix staff will choose their favorite MSTY.

The winner will be notified on Monday, November 2.