SoundGrail is a free music theory app for pianists, guitarists and DJs. Learn chords, scales, key signatures, and more. Play guitar, piano and DJ like a pro! When listening to your favorite songs or even when writing and producing your own music, you may sometimes be overwhelmed by the sheer amount of music theory knowledge required to fully understand the relationships among scales, chords, and all the rest. Music is made up of individual notes, which complete chords, which finally build captivating chord progressions that lead the listener through the song. This can get incredibly confusing sometimes for composers and producers, especially when constructing chords they may not be entirely too familiar with. While this art comes naturally to some, there are tools out there like this chord and interval analyzer to help just about anyone create and identify simple and complex chords and scales. Here’s a breakdown of how this chord and interval tool can help you. Simply click on the keys on the keyboard (which are labeled for your convenience) to build a chord. The chord namer will instantly tell you what chord is being played.