I don't have A (this means, ONE) favorite electronic music song at the moment. Instead, I have multiple favorite ones, some of them are:
Black Sun Empire - Feed the Machine (feat. Noisia)
Black Sun Empire - Killing the Light (feat. Inne Eysermanns)
Black Sun Empire - Chaingang
Noisia - Shellshock (feat. Foreign Beggars)
Noisia - Sunhammer (feat. Amon Tobin)
Noisia - Tommy's Theme
Noisia - Groundhog
Eisenfunk - Pong
Funker Vogt - Arising Hero
Headhunterz - End of my Existence
Headhunterz - Project1
For the moment I would say the #1 EDM track for me is "Skrillex - Stranger".
Otherwise I'm pretty into "Bastille - Pompeii (Audien Remix)", and "Zedd - Find You (Syn Cole Remix)" for the moment.
Some personal allstars I have are:
-Steve Angello with Matisse & Sadko - SLVR
-Kryder - Aphrodite
-Mat Zo & Porter Robinson - Easy
-Tom Swoon - Who We Are
-a whole bunch of deadmau5 tracks
-Zedd - Fall Into The Sky
-Tom Swoon - Wings (Myon & Shane 54 Summer Of Love Remix)
-Junior Jack - E Samba
-Bassnectar - Upside Down (Bassnectar & Terravita Remix)
-Sub Focus - Tidal Wave
-Room 5 - I Need You
All time favourite have to be:
Porter Robinson: Language, Sad Machine, Easy
Zedd: Fall Into The Sky, Clarity, Spectrum, Follow You Down
Axwell: In My Mind
Avicii: Silhouettes
Clockwork: BBBS
Sebastian Ingrosso/Tommy Trash: Reload
Cedric Gervais: Summertime Sadness Remix
I wouldn't say I have a favorite track but I have been listening to Posij lately,
he's signed to Noisia's label and he quite different from a lot of EDM/Dub/DnB artists.