It's possible that there is a different song playing in the cutscene with Vagabond -- if that's the case then it would be part of the cutscene and not a separate MIDI file we could extract (I have a terrible ear for music, but LeHah could probably listen to the different tracks and tell us what's what).
The various MIDI files seem to call it 'Bar Music' or 'Alternate Bar Music'; I'm not sure if that's from the game itself or something someone (Locke?) added later. Unfortunately, there's no soundtrack with proper track names for WC3 like there is for WC1 (with the exception of a few pieces which have appeared elsewhere).