A gamelan is a traditional musical ensemble from Indonesia, typically from the islands of Java and Bali, featuring a variety of instruments such as metallophones, xylophones, kendang (drums) and gongs; bamboo flutes, bowed and plucked strings. Vocalists may also be included. For most Indonesians, gamelan music is an integral part of Indonesian culture.

The term refers more to the set of instruments than to the players of those instruments. A gamelan is a set of instruments as a distinct entity, built and tuned to stay together – instruments from different gamelan are generally not interchangeable.

The word gamelan, referring only to the instruments, comes from the low Javanese word gamel, referring to a type of hammer like a blacksmith's hammer. The term karawitan refers to the playing of gamelan instruments, comes from the word rawit, meaning 'intricate' or 'finely worked'. The word derives from the Javanese word of Sanskrit origin, rawit, which refers to the smooth, elegant sense idealised in Javanese music. Another word from this root, pangrawit, means a person with that sense, and is used as an honorific when discussing esteemed gamelan musicians. The high Javanese word for gamelan is gangsa, formed either from the words tembaga and rejasa (copper and tin) or tiga and sedasa (three and ten), referring to the materials used in bronze gamelan construction or their proportions.

Peter Gene Hernandez (born October 8, 1985), better known by his stage name Bruno Mars, is an American singer-songwriter and record producer. Raised in Honolulu, Hawaii by a family of musicians, Mars began making music at a young age. He performed in various musical venues in his hometown throughout his childhood. He graduated from high school and then moved to Los Angeles, California to pursue a musical career. Mars produced songs for other artists, joining production team The Smeezingtons.

Mars had an unsuccessful stint with Motown Records, but then signed with Atlantic Records in 2009. He became recognized as a solo artist after lending his vocals and co-writing the hooks for the songs "Nothin' on You" by B.o.B, and "Billionaire" by Travie McCoy. He also co-wrote the hits "Right Round" by Flo Rida featuring Ke$ha, and "Wavin' Flag" by K'naan. In October 2010, he released his debut album, Doo-Wops & Hooligans. Anchored by the worldwide number-one singles "Just the Way You Are" and "Grenade", the album peaked at number three on the Billboard 200. Mars was nominated for seven Grammys at the 53rd Grammy Awards, winning Best Male Pop Vocal Performance for "Just the Way You Are".