Waking Up: Glass Onion - The Beatles
First Day At School: Sleeping on the Sidewalk - Queen
Falling In Love: Tangerine - Led Zeppelin
Fight Song: Death on Two Legs (Dedicated To ... ) - Queen
Life: How Do You Sleep? - John Lennon
Mental Breakdown: The Trial - Pink Floyd
Driving: Good Old-Fashioned Lover Boy - Queen
Flashback: Two Suns in the Sunset - Pink Floyd
Getting back together: The Peking King and the New York Queen - The Doors*
Wedding: Cobwebs and Strange - The Who
Death of a loved one: Lucy in the Sky With Diamonds - The Beatles
Final Battle: 905 - The Who
Death Scene: Save Me - Queen
Funeral Song: Save the Last Dance for Me - The Beatles**
End Credits: Shakin' All Over/Spoonful/Twist and Shout (live) - The Who
*Post-Morrison Doors - from "Full Circle," their last album
**From the unreleased first mix of "Get Back", which later became "Let it Be"
I have complete discographies for The Beatles, The Doors, Led Zeppelin, Pink Floyd, Queen, The Who, Tenacious D and Spinal Tap (those last two aren't hard, though), which is why all the results were pretty much exclusively from them.
And creepily , some of these are very appropriate - "Save Me" for the death scene, and "The Trial" for mental breakdown, for example.