Staff changes in a piano staff. In the first measure, the voice from the second staff has some notes on the first staff. In the second measure, the voice from the second staff holds four chords. All notes of the first one are in the second staff, and all notes of the second one are in the first staff. The remaining two demonstrate cross-staff chords: The top note of the third chord is in the first staff (with the other notes in the second staff), and the bottom note of the fourth chord is in the second staff (with the other notes in the first staff). In both bars, no explicit stem directions are set; it is thus up to the application to decide whether the beams appear below the second staff or between the two staves. MusicXML Part 2 0 major 4 4 2 G 2 G 2 A 3 1 2 eighth 2 begin E 4 1 2 eighth 1 continue A 3 1 2 eighth 2 continue E 4 1 2 eighth 1 end C 5 1 2 eighth 1 begin E 4 1 2 eighth 1 continue A 3 1 2 eighth 2 continue B 4 1 2 eighth 1 end F 4 8 1 1 8 C 3 1 2 eighth 2 begin E 3 1 2 eighth 2 G 3 1 2 eighth 2 C 4 1 2 eighth 2 C 4 1 2 eighth 1 continue E 4 1 2 eighth 1 G 4 1 2 eighth 1 C 3 1 2 eighth 2 continue E 3 1 2 eighth 2 G 3 1 2 eighth 2 C 4 1 2 eighth 1 G 3 1 2 eighth 2 end C 4 1 2 eighth 1 E 4 1 2 eighth 1 G 4 1 2 eighth 1 4 2 half 2 light-heavy