var midiFile = new MidiFile("song.mid");

// 0 = single-track, 1 = multi-track, 2 = multi-pattern
var midiFileformat = midiFile.Format;

// also known as pulses per quarter note
var ticksPerQuarterNote = midiFile.TicksPerQuarterNote;

foreach(var track in midiFile.Tracks)
{
    foreach(var midiEvent in track.MidiEvents)
    {
        if(midiEvent.MidiEventType == MidiEventType.NoteOn)
        {
            var channel = midiEvent.Channel;
            var note = midiEvent.Note;
            var velocity = midiEvent.Velocity;
        }
    }

    foreach(var textEvent in track.TextEvents)
    {
        if(textEvent.TextEventType == TextEventType.Lyric)
        {
            var time = textEvent.Time;
            var text = textEvent.Value;
        }
    }    
}

class MidiFile
{
    int Format;
    int TicksPerQuarterNote;
    MidiTrack[] Tracks;
}

class MidiTrack
{
    int Index;
    List<MidiEvent> MidiEvents;
    List<TextEvent> TextEvents;
}

struct MidiEvent
{
    int Time;
    byte Type;
    byte Arg1;
    byte Arg2;
    byte Arg3;
}

struct TextEvent
{
    int Time;
    byte Type;
    string Value;
}