Yes, this is possible.
The same question was asked in one of the forums, with an answer available:
According to the conversation, it appears to work for PC and Mac.
In the article, the steps outlined are:
Yes there is! But I never documented it. Here are ...
Another that i found is FreeMajor but is more or less as anothers editors. Really i don't found any that control I/o, routing, mod, midi util ... etc. Only control presets and effect parameters
First of all, there is no such thing as "note" in MIDI. Note in fact is a pair of Note On / Note Off events.
It's absolutely OK to have tempo changes anywhere in a MIDI file. It's just a MIDI event like any other. So Tempo event between Note On and Note Off just affects when Note Off event will be played.
So, for example, if the initial tempo is ...