What is parallel thirds music?
For instance, the key of C has no sharps or flats so counting tones in the C major scale starting with C makes E a major third from C. F would be a minor third from D. If you play a C and an E together followed by a D and an F together by moving each note up, you are using parallel motion.
What are thirds on a piano?
Thirds are when two notes are played together a third apart. Before learning starts, make sure you are happy with your chosen fingering, and write it into the score. This is especially important when negotiating thirds or any double note pattern.