Press keys from 1 to G (excluding symbolic characters) to stimulate music: this include sharps and flats. The sound used is the first part of the default "Meow" sound effect. Creating chords are possible.
~ There is no option to change volume yet - not because I'm lazy, but there are so many sprites that control each individual note. ~ 'MewTunes' is a take on iTunes and sounds close to the pokemon, Mewtwo. ~ Pressing 'S' results in the original sound effect: coincidentally, S is the initial letter of Scratch cat! O_O