I’d Love To Change The World by Ten Years After is in Em at 124 beats per minute and runs 2:54 across 26 bars. It uses 5 chords — Em, G, Am, C, B7. 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? I’d Love To Change The World guitar melody tab.