With just days to go until this year's gig series at the Royal Hospital, Kilmainham kicks off, we've put together a feature on the acts playing the Dublin venue over the coming week.

Walking on Cars will get the ball rolling on June 24th, followed by The Coronas on June 29th and Green Day on July 1st.

How well do you reckon you know all three acts?

Read on to find out a few things that may surprise you...

1. Green Day's Billie Joe Armstrong and Mike Dirnt have been in a band together since they were 14. Their first band was called Sweet Children.

2. The Coronas were originally called 'Corona', but had to change their name after it clashed with a 1990s Italian eurodance act of the same name. (What we really need now is a Coronas cover of 'Rhythm of the Night').

3. Green Day drummer Tre Cool's real name is Frank Edwin Wright II, and he was actually born in Frankfurt, Germany where his army officer father was stationed in 1972.

4. Walking on Cars played their first-ever gig at a youth cafe in their hometown of Dingle in 2010. Last year, they played their biggest headline show to date at the 3Arena.

5. Music runs in Danny O'Reilly's family, and not just via his famous mam Mary Black. His sister Roisin also performs as Roisin O, while their cousin Aoife Scott (Frances Black's daughter) is also a musician.

6. It's an open 'secret' that Green Day once released an album under the alias 'The Network' called 'Money Money 2020', although they have repeatedly denied it over the years.

7. Walking on Cars got their first taste of success after winning the Red Bull Bedroom Jam – a battle of the bands style contest – in 2012. Their prize included professional recordings of two songs, 'Catch Me If You Can' and 'Two Stones'; the former spent 20 weeks in the Irish Top 30 and put them on the radar.

8. Green Day's 'Wake Me Up When September Ends' was written about the death of Billie Joe Armstrong's father, who died of cancer in September 1982, when the rocker was just 10 years old.