The Sign by Ace Of Base is in Eb at 70 beats per minute and runs 4:04 across 34 bars. It uses 9 chords — Gm, Eb, F, C, D, G, Em, Am, 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? The Sign guitar melody tab.