In the last few years, I've started taking my bass playing more seriously. I've found a teacher, joined in on jam sessions, and sat in for bands like Airplane Mode. In my search for ways to help me improve, I found inspiration for my next app.

Becoming a better musician includes some level of music theory study. Learning about different intervals, chords and scales make it easier to play music along with other people or recordings. At my first jam session, I had people shouting things like, "F minor!" at me and at first I had almost no clue what they meant. Thanks to my teacher, I not only understand what they mean when they shout "F minor", but I can also start to hear it and play it before they even open their mouth.

This is where the new app comes in. It isn't enough just for you to know about different intervals and chords. You also need to be able to recognize them when you hear them. Recognizing minor chords, major seventh intervals, and the like takes regular practice. Semitones is an app created to help with just that. Now whenever you're waiting in line or taking a break on a bench, you have an opportunity to improve your ears.

Semitones comes with a number of progressively difficult exercises you can work through. It starts out with only two possible intervals and works up to 16 possible intervals. With less possibilities, it is easier to get the hang of recognizing the difference. Each exercise has a definite ending after 10 questions. It will also remember your progress so you can see how you're doing.

I'm really proud of the work we did. The talented Florian handled the design. The brilliant Jean MacDonald taught me quite a bit about marketing strategy and launching. Awesome people like Joe encouraged me to build it in the first place. Thank you all for help!