 As well, since it was originally written for the harpsichord, a light-sounding keyboard instrument in which the strings are plucked with quills, this suggests that the notes should be played relatively lightly, and with spaces between each note, rather than in a full-bodied, sustained legato.Although not universally accepted, many teachers drill students with the repetitive playing of certain patterns, such as scales, arpeggios, and rhythms.Scales are often taught because they are the building blocks of melody in most Western art music.