My Heroes Have Always Been Cowboys by Willie Nelson is in Bb at 120 beats per minute and runs 2:42 across 48 bars. It uses 4 chords — F, Bb, G7, C7. The chord diagram changes as the song plays and the words light up as they are sung, so you can strum and sing along without reading ahead.
Want the melody line note by note? My Heroes Have Always Been Cowboys guitar melody tab.