list of top 20 songs assuming one song per artist:

the arcade fire - une année sans lumière
capsule - sugarless girl
65daysofstatic - retreat! retreat!
ann lee - 2 times
crystal castles - black panther
yeah yeah yeahs - kiss kiss
metric - down
kylie minogue - breathe
the flaming lips - yoshimi battles the pink robots pt. 1
genki rockets - heavenly star
utada hikaru - beautiful world
hrsta - swallow's tail
hot chip - ready for the floor
emily haines & the soft skeleton - reading in bed
muse - starlight
ayumi hamasaki - step you
explosions in the sky - your hand in mine
regina spektor - ode to divorce
porcupine tree - synaesthesia
daft punk - one more time