The most accurate technologies to estimate chords are based on machine learning and pattern recognition techniques and algorithms. The process of identifying chords from an audio file and giving a time-aligned sequence of chords comes under a research topic called Automatic Chord Estimation. They are useful tools to have for composers, arrangers, and performers. What is a Chord Identifier?Ĭhord identifiers are websites or apps that either analyze audio files and recognize the chords in them or suggest possible chords based on notes the user enters manually. Oolimo is more like a playground for music lovers, with features that need to be explored, discovered, and enjoyed at your own pace. It also has advanced features like the chord progression matrix that composers and musicians with a strong base in music theory can use. Oolimo has a section where you learn the theory about chord progressions and harmonies from scratch. You can experiment with inversions, and also choose to see the note numbers and intervals. You can see the multiple different ways to play any of these chords on the guitar. It lists all the notes of the chromatic scale, and sixty different chord types for each. The site is primarily for guitarists and has a fretboard interface with options to switch between left and right-handed views. It can be considered a one-stop-shop to learn about chords, progressions, and harmony.
The Oolimo website has a brilliant and aesthetic user interface and very thoughtful, intricate features.