Can someone please help by sorting the game songs by difficulty?

• Smooth Operetta - The Flower Duet
  
• Rave New World - From the New World
• William Tell Overload - William Tell Overture
  
• Hall of the Mountain Dude - In The Hall of the Mountain King
  
• 1812 Overdrive - 1812 Overdrive
  
• Valkyries Rising - Ride of The Valkyries
  
• Tail Light Sonata - Moonlight Sonata
  
• Carmen Electric - Carmen,
  
• Game Over Beethoven - Symphony No. 5 in C minor
  
• Toccata and Funk -  Toccata and  Fugue

• Eine Kleine Rochtmusik -  Eine Kleine Nachtmusik "A Little Night in Music"
• Cannon in D - Cannon in D
• Sugar High - Dance of the Sugar Plum Fairy
• Sting of the Bumble Bee - Flight of the Bumble Bee
• Explode to Joy - Ode to Joy

in hope to achive the "Carpal Tunnel Syndrome Award"

I think the difficulty goes from easy to hard in the games list. First song is easiest. But guess if you really like some song then it feels easy even if it's not.