The melody of My Heroes Have Always Been Cowboys by Willie Nelson runs 260 notes across 48 bars, 2:42 long in Bb at 120 beats per minute. The tab sits almost entirely in the first two frets, one note at a time — no chords to barre and no strumming pattern to keep up with. A piano backing track plays the chords and bass underneath, so the line you are learning sounds like the record even at half speed.
Prefer to strum and sing it instead? My Heroes Have Always Been Cowboys chords and lyrics.