Tropical Rock (or Trop-Rock) is a genre of popular music that incorporates elements and influences of Rock and Roll, Country and Caribbean themes with an island style that represents a laid-back way of life.
 
Instrumentation is usually acoustic guitar-based, and often includes steel drum, congas, marimbas, vibes or other percussion instruments to create an "island sound".
 
While Country and other musical styles focus on "Falling in Love" / "Falling Out of Love" themes, Trop Rock's main focus is on "Escapism" -- a laid back lifestyle, tropical places, boating, simplifying life and having fun. 
 
Jimmy Buffett is often referred to as the "Pop of Trop Rock".  Other Major Label artists include:  Kenny Chesney, Zac Brown Band and Bertie Higgins.