someone should post a tutorial video

[Acies]

Uhm, can't you:
void OnStart()
{
SetEntityPlayerInteractCallback("note_generic_1", SoundNote1, true);
}

void SoundNote1(string &in entity)
{
PlaySoundAtEntity("TextRead", "Text_1.ogg", "Player", 0.5f, false);
AddTimer("NoteEndGeneralT", 0.5f, "NoteEndTimer");
}

void NoteEndTimer(string& asName, float afTime, string& asFunction);
{
StopSound("TextRead", 2.0f);
}

Or is there a specific thing in the entity tab of a note?