Poi - Then or afterwards, e.g. poi No. 3, then No. 3.
Round - Like the canon, a song in which two or more parts having the same melody, starting at different points. The parts may be repeated as desired.
Sheet music - An individually printed song, most often for voice, piano, guitar,or a combination of the three. Any printed music.
Tono - Tone, key, pitch.
Andante - Moderate tempo.