Keith Urban and his co-writer Richard Marx recently scored another #1 hit on the Billboard Country Singles chart with "Long Hot Summer". As they always do in Nashville, whenever someone gets a #1 hit, their label will usually throw a big party for the artist and the songwriters. But at this party, it was not just about Keith Urban and Richard Marx. They changed it up a bit and had some fans jam along with them. Check out this cool video from the festivities.