The song "Stairway to Heaven" by Led Zeppelin is in the key of A minor. A Minor (which is the key of C but based around a tonal center of A), so A B C D E F G A, or all the white keys on the piano. You might also see it described as being in A Aeolian, which means the same thing.

Song Metrics\n\n The track runs 3 minutes and 5 seconds long with a G key and a major mode. It has low energy and is not very danceable with a time signature of 5 beats per bar.

Clear the Cache of Your Console. Another common reason for the Call of Duty Modern Warfare Multiplayer not working error is the corrupted cache data. In this case, you can try clearing the cache files on your PC or console to fix the issue.