So the theme is birthday, turning 18, so since you're ending the 17th year, it could involve either age.

Paradise by the Dashboard Lights - Meatloaf
That Girl Has Love - Rooney
Seventeen - Ladytron
Seventeen - Jimmy Eat World
I Saw Her Standing There (She was Just Seventeen) - The Beatles
Edge of Seventeen - Stevie Nicks
Anthems for a Seventeen Year Old Girl - Broken Social Scene
Girl at the Rock Show - Blink 182
Looking Glass Eyes - Aiden
Dancing Queen - ABBA
Seventeen - Aquapura
When I Was Seventeen - Frank Sinatra
At Seventeen - Janis Ian (Ian Janis)?
Seventeen - Foreigner
Not Seventeen - Mandalay
Seventeen - Elton John
Love is Always Seventeen - David Gates
Seventeen - Love Spit Love
Seventeen - China Chrisis
I was Only Seventeen - The Beu Sisters
Soco Amoretta Lime (sp) - Brand New
Ocean Avenue - Yellowcard
Eighteen - Home Town Hero
Almost Eighteen - Roy Orbison
Eighteen - Slapstick
Going on Eighteen - Dusty Drake
She Will Be Loved - Maroon 5
Forever Young - Bob Dylan
The Matches - Say 18
The Promise Ring - Anne You Will Sing
Ban The Tube Top - Reel Big Fish
Hometown Hero - Eighteen
Strawberry Wine - Deana Carter