I will put the most commented songs into a spoiler Waiting For Love is probably mine, however I also really like Friend Of Mine, Wake Me Up, Liar Liar and SOS. It's rlly hard to pick one - I would say those are just the ones I have listened to most as I love all his songs
I like this one as this was the first time I heard from Avicii, "Martin Garrix- Hold On Never Leave Feat. Avicii (Psycho)"
Really hard to say which Avicii song is the best seeing as all the songs are pretty amazing but I feel like "The Nights" really speaks to you if you listen to the lyrics but also like Sunset Jesus :worm
Girl Gone Wild - Madonna vs Avicii is probably my favourite. It's a song he performed at Ultra 2012 (I think)
Waiting for love is amazing, but levels defined the EDM scene for a long time so it's so hard to choose.
"I took a pill in Ibiza" - Mike Posner's story is tragic. Todd in the Shadows yt channel has a great video about him. He became a one-hit wonder with the single "Cooler than me", faded to obscurity, then took a pill to show off for someone who was more famous than him at a younger age, and now he's left in obscurity again.