This program teaches general music skills as well as guitar, ukulele, bass, and piano through popular music. The free teacher membership includes a selection of pop and rock music that students can play along with. The interactive play-along mode shows the hand positions and chords in real time while following along on the score. For teachers, there is a collection of lesson plan ideas to use with the program. In addition to the website, Solfeg.io can be used with the app, which is available on all mobile platforms.