Getty Images

If there's anything Bonnaroo can be counted on, it's stepping up its game with every passing lineup. 2015 is no exception. Billy Joel and Deadmau5 are set to headline the four-day affair in the fields of Manchester, TN, as are Mumford & Sons, who will officially be returning from their hiatus to occupy one of the festival's top slots on the lineup.

This is great news for Mumford fans, especially those who tried to catch the neo-folk rock band in 2013. The guys had to cancel their headlining set due to illness at Bonnaroo that summer. So their inclusion on the Bonnaroo 2015 lineup is fantastic, especially given how they've kept mum (ha) about when exactly they were planning on getting back in the boot-stompin', banjolin-pickin' habit (if at all).

Also joining the Piano Man, the rodent head-sporting EDM giant and the guys who made suspenders and Americana cool again are a ridiculous amount of musical greats representing every genre. Kendrick Lamar, Florence and the Machine, Robert Plant and The Sensational Space Shifters, My Morning Jacket, Bassnectar, Alabama Shakes and Hozier and many, many more will be split between the numerous stages of the festival. 

Tickets for the festival go on sale this Saturday on the Bonnaroo website. Additional acts will be announced at a later date, but in the meantime, feast your eyes on the Bonnaroo 2015 lineup in full below.