July

Montreux Jazz Festival

The Montreux Jazz Festival is the second largest jazz festival in the world and the largest jazz festival in Europe, as well as being Switzerland's largest festival of any variety. With a lineup that isn't exclusively Jazz, the festival caters to a wider audience than hardened jazz fanatics, but also acts as a gateway to jazz for those who are less familiar with it.

Location: 
Montreux, Switzerland
Cost: 
Varies for each event (See link below)
Capacity: 
Paid tickets range from 60-260CHF, Free events are there too

Exit Festival

Exit festival (also referred to as State of Exit) is an annual music festival held in Petrovardian Fortress of Novi Sad, Serbia.

It has run every summer since 2000 and has lasted for four days since 2003.

As well as its strong social and political messages, Exit festival does not stick to one genre, showcasing every genre from hip-hop to metal.

Location: 
Petrovaradin Fortess, Novi Sad, Vojvodina, Serbia
Cost: 
2013 TBA
Capacity: 
Approx. 200,000

Roskilde

Roskilde Festival is a 9 day (including 5 warm-up days) annual music festival held in the south of Rosklide in Denmark, with an estimated attendance of 110,000 people a day, it is amongst the six biggest music festivals in Europe.

Since it’s launch in 1971, the festival has been known for it’s support and development of music, humanism and culture.

Rumours

Early 2013 rumours indicated that Daft Punk may be confirmed, however it has been conformed no tour dates can be expected until 2014.

Location: 
Roskilde, Denmark
Cost: 
2013 tickets on sale 1st Dec 2013
Capacity: 
Unknown