Nick Jonas keeps it cool in a cowboy hat as the Jonas Brothers rock out at the 2009 Houston Rodeo on Sunday afternoon (March 8).

The 16-year-old musician, along with big bros Joe and Kevin, performed to a sold-out crowd. 

The trio wrote on their MySpace, “We are writing to you from our hotel room in Houston, Texas. We are here for the Houston Rodeo. It is a huge rodeo. They bring singers in from all genres of music.They told us that there will be over 72,000+ people here today for our show. This is the biggest audience we have ever performed in front of as headliners. It is very exciting! It is so great to be back out in front of fans. This is what we love doing more than anything.”