could it be possible to have tie bars?

[code-golfer]

if i want to have a c maj chord while the melody line of "C-B-C" i would have to write
[0,4,7,'0]-[0,4,7,11]-[0,4,7,'0]-
but every two beats i have to press the c maj chord. this could be a major problem for writing polyphonic music, and i dont seem to know a way around this. maybe make it such that if you have an "@" before the pitch that means that it connects to the last instance of the pitch?