Aria itself is always written in a single line:
http://en.wikipedia.org/wiki/Aria[
^].
If a sheet music piece is written in several lines, it means that this is the
partiture with other lines written fro other voices and instruments:
http://en.wikipedia.org/wiki/Partiture[
^]. :-)
Input element in HTML is always single line. If does not need to be multiline, just because the
textarea
element does it. I have no idea why would not using it.
—SA