

Is your understanding of basic music theory a bit shaky? Do you think the Circle of Fifths refers to Dante’s Divine Comedy? This beautifully designed and comprehensive app ($1.49, first two days free) helps you explore harmonic structures and chord progressions. You can also pin the note to your home screen for instant access when inspiration strikes! Create a note (such as “Melody Ideas”), tap the microphone icon and start singing.

Use OneNote’s audio feature to record melodies. This built-in app isn’t just handy for your text notes. You also have a choice of three types of guitars: electric, classical and steel-string. ChordOracle supports simple chords like major and minor triads as well as more complex chords such as ninths with a diminished fifth. Experiment with your melody by strumming or plucking the guitar strings of this free app.
