Scale Heaven - Browse and play any scale/chord, chord progression.
Musico - A game-based digital play-along practice platform 🎶
Tonaly - Compose songs and practice scales
lightnote - An interactive site to learn the basics of music theory 🎶
ChordIQ - Learn notes, chords, sight reading, perfect pitch and more.
Scales-Chords - Free online music tools featuring a searchable chord database and chord charts.