I generally find music in general to be very seasonal, so your mileage may vary, but here's a a few for each.
Spring:
Shad - TSOL (hip-hop)
Asobi Seksu - Citrus (poppy shoegaze)
Belle & Sebastian - The Life Pursuit (indie pop)
Caitlin Rose - Own Side Now (folk/country)
Florrie - Experiments (pop) (hi icon)
Sam Cooke - Live At The Harlem Square Theater (r&b)
Summer:
Arcade Fire - The Suburbs (obvious)
Cloud Nothings - Attack On Memory (rock)
Joel Plaskett Emergency - Ashtray Rock (folk rock) (hi again icon)
Reflections Eternal (hip hop)
Anamanaguchi - Dawn Metropolis
Fall:
Robyn Hitchcock - Jewels For Sophia
Happy End - Kazemachi Roman
Yellow Magic Orchestra - BGM (electronic)
Beirut - The Rip Tide (indie)
Winter:
Leonard Cohen - New Skin For The Old Ceremony (folk)
Portishead - Third (eerie pop?)
Shabazz Palaces (hip hop)
Aoki Takamasa + Tujiko Noriko - 28 (down tempo electropop?)
--
"It's a magical world, Hobbes ol' buddy...let's go exploring!" - Calvin
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