Comment #4 on issue 2653 by [email protected]: Midi output does not respect tied notes
http://code.google.com/p/lilypond/issues/detail?id=2653
Ties and slurs are different: with a tie, the same note sounds on, with a slur, you play it legato: there is no break between notes, but the notes are sounded separately. The difference is small for instruments with continuous sounds like strings and wind instrument, but larger for percussive instruments like the piano. Ties and slurs are also formatted differently.
