I play the piano, organ, bass and drums, all by ear, at my church. I am very well acquainted with music. I use this app when I don’t really have time to sit down and 100% dissect a song and see exactly what chords the artist is using in their song. This gives me the extreme very basic chords. It would be GREAT if this was more advanced than just giving the major and minor and the occasional diminished chords that it picks out. Major 7th, 9th, 11th and 13th would be absolutely amazing! But I do feel like the 9th on would be difficult to detect. Anyway this app is not 100% accurate. Even after the update so just be warned this app will get you relatively close to what the song is doing but you have to use some music theory to ‘translate’ what it’s saying to do. It would be great if with in the app you could change the key with out effecting the tempo. But over all if you’re just starting out this app does have what you’d need to play along with the song or even memorize the chord progressions.

I realize that it is geared to keyboards and guitars, but it would be nice if there was Bb and Eb instrument notation transcription for horn players. We need to practice playing over the changes, and if the chords shown were keyed to our instruments that would be greatly helpful. There is a transpose feature, but it actually transposes the audio, too, which is only helpful when you want to play in a different concert key.So I request a button that would change the notation for each instrument key. C, Bb, Eb, and why not throw F in there for the those horns, too:)

When it allows you to use a song, it works great, does everything you would hope for in an app like this. The huge problem is that the app is only compatible with about one out of every twenty songs in my large iTunes collection. The vast majority of songs are greyed out and labeled “This data cannot be selected.” This includes the songs that I got this app for in the first place. I’m not sure why the compatibility rate is so low, but based on all the five star reviews, I would guess that not many people are having this problem for some reason. Therefore, even though it is useless to me, I give it three stars.

This app has all the features I’ve ever wanted in a chord analyzer app, with a uniquely intuitive functionality/interface that is beyond anything I’d have ever thought to want. Meaning, it does what it says it’ll do, and more, better. *Sadly, it works only with songs owned by you, sans DRM, uploaded to your Mac’s iTunes, and synced with your iPhone and Apple Music account. That leaves a lot of music—all acquired and owned legally—not compatible with this app. Meaning, it works with only an extremely small set of songs.