First of all, you should show us (not just devs) your music work so we could have a taste of your work.
Second, you need to tell us how much time you need to compose a track. For games developed for game jams, time is essential so having composer who could compose tracks within jam's duration is great.
Third, you need to tell what kind of genre your music work would be or I should say, what music genres you are capable of composing.