Skrillex first started out in a post-hardcore band called From First To Last. He was the lead vocalist and had to leave the band due to vocal problems.
He then started a solo project under his own name, Sonny Moore. Releasing free downloads via myspace and such. He never took his Sonny Moore project too far, and then he started Skrillex.
When he first started producing electronic music under the name we know him by today, Skrillex. He produced a lot of emotional progressive house and trance music. If you are somewhat new to Skrillex I suggest you check out some of his older songs like "Slats Slats Slats" and "Make Things For Smile."
In early 2010 he released his "My Name is Skrillex EP" which consisted of 6 tracks. The first signs of his dubstep productions appeared in this EP with his track "Fucking Die 1."
Later on in 2010 his "Scary Monsters and Nice Sprites EP" was released on Deadmau5
's label Mau5trap. This is the one that got him famous as his video on Youtube for "Scary Monsters and Nice Sprites" has almost 70 million hits.
In 2011 he released two EPs, "More Monsters and Sprites" in June and "Bangarang" in December. Also in 2011, he played over 320 live shows and produced music on his tour bus.
In 2012 he won 3 grammy awards. "Scary Monsters and Nice Sprites" won best dance recording and the whole EP won best electronica album. His remix of Benny Benassi's "Cinema" also won best remixed recording.
As of now Skrillex fans are awaiting his next studio album, which is said to be called "Voltage." The only song that is confirmed to be on the album is "Voltage" which Skrillex made on his tour bus and played at shows in 2011. Many popular videos of Skrillex's live shows consist of him playing "Voltage."