The melody of Long Time by Boston runs 339 notes across 40 bars, 3:33 long in Ebm at 116 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? Long Time chords and lyrics.