A diatonic scale made up of eight ascending notes, from the key note to its octave, with the sequence of intervals between the notes as follows: tone-tone-semitone-tone-tone-tone-semitone The name of the scale is taken from the key note
n. Music A diatonic scale having half steps between the third and fourth and the seventh and eighth degrees and whole steps between the other adjacent degrees
Start at middle C and play every white note until you get to the next C You have just played a major scale It's the scale you use when you sing "do re mi fa so la ti do "