*
* An smf_t structure represents a "song". Every valid smf contains one or more tracks.
* Tracks contain zero or more events. Libsmf doesn't care about actual MIDI data, as long
*
* An smf_t structure represents a "song". Every valid smf contains one or more tracks.
* Tracks contain zero or more events. Libsmf doesn't care about actual MIDI data, as long