The melody of I Know You Rider by Grateful Dead runs 137 notes across 41 bars, 2:50 long in D 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? I Know You Rider chords and lyrics.