Sumatra (Indonesian: Sumatera) is an island in western Indonesia, westernmost of the Sunda Islands. It is the largest island entirely in Indonesia (two larger islands, Borneo and New Guinea, are shared between Indonesia and other countries) and the sixth largest island in the world at 473,481 km² with a population of 50,365,538. Its biggest city is Medan with a population of 2,109,330.

Sumatra forms an elongated landmass spanned diagonal northwest — southeast axis. The Indian Ocean borders the west, northwest and southwest sides of Sumatra with the island chain of Simeulue, Nias and Mentawai bordering along the southwestern coast. On the northeast side the narrow Strait of Malacca separates the island from Malay Peninsula, an extension of Eurasian continent. On the southeast the narrow Sunda Strait separates Sumatra from Java. The northern tip of Sumatra borders the Andaman islands, while on the lower eastern side are the islands of Bangka and Belitung, Karimata Strait and the Java Sea. The Bukit Barisan mountains, which contain several active volcanoes, forms the backbone of the island, while the northeast sides are outlying lowlands with swamps, mangrove and complex river systems. The equator crosses the island at its center on West Sumatra and Riau provinces. The climate of the island is tropical, hot and humid with lush tropical rain forest originally dominating the landscape.

LaCosta Tucker (born December 12, 1951) is an American country music artist who recorded in the 1970s and 1980s as La Costa. The sister of country singer Tanya Tucker, LaCosta charted several singles of her own in the 1970s on the Billboard country singles charts, including the #3 "Get on My Love Train."

Born in Seminole, Texas, Tucker moved around frequently, as her father Beau Tucker was a construction worker. Tucker had two siblings, Donald and younger sister, Tanya Tucker. Beau felt LaCosta had the talent to be a star, and Tucker won her first talent contest at age four. In-between entering beauty pageants and talent shows, she performed with Tanya in a band called the Country Westerners. She graduated from Cochise College in Douglas, Arizona and began working as a medical records technician as she sang in clubs and became Miss Country Music, Phoenix.

La Costa married, and around this time, Tanya became a country music star. La Costa moved to Las Vegas, to be near Tanya, and Beau Tucker helped her get a recording contract with Capitol Records in 1974. Going only by La Costa, she soon had a hit record with "I Wanna Get To You", which landed at 25 on the country charts, followed by "Get On My Love Train" at number 3 and "He Took Me for a Ride" at number 10. She charted 10 more singles for Capitol and recorded five albums for the label. In 1982 she moved to Elektra Records and she charted with "Love Take It Easy On Me", under her full name of La Costa Tucker.