You've been there. A beautiful melody has come up in your head and keeps playing again and again. But you don't know what it is. You are frustrated because nobody recognizes your humming.
Good news for you. OnMelody is a search engine using the Musipedia database. You can identify the title and compose of a melody with just a few taps.

- How to search
Every note in certain melody, except first note, has a melodic motion relative to the note just before them. Thus there are 3 kinds of motions we have, up, repeat, and down. You need to translate the melody in your head to these melodic motion by pushing 3 buttons each represent up, repeat and down.