Brave New World by Jeff Wayne is in Ab at 80 beats per minute and runs 16:40 across 126 bars. It uses 14 chords — Eb, Ebm, Abm6, Gm, Cm, Ebsus4, Abm, Absus4, and a few more. 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? Brave New World guitar melody tab.