Question: Which year was the singer of the album Easter Island born in?

Context articles: Kon-Tiki2
Rhinopias cea
Kris Kristofferson
Motu Nui
Aku-Aku
Easter Island (album)
Easter Island
Jacob Roggeveen
Rapa Nui National Park
Hoa Hakananai'a

The Kon-Tiki2 Expedition built and sailed two balsawood rafts from Peru to Easter Island in 2015.
 The goal of the expedition was to show that balsawood rafts can be sailed across long distances, and to collect scientific data in the southeast Pacific.
 The expedition built two rafts in 30 days and went on to sail the rafts more than 2000 nautical miles before reaching Easter Island after 43 days at sea.
 No other balsa rafts have sailed to Easter Island in modern times.
Rhinopias cea, Cea's Scorpionfish, is a species of scorpionfish known only from Easter Island.
 This species grows to a length of 20.2 cm .
 This species is only known from the holotype found at Easter Island on the rocky bottom 5 m below the surface.
 This holotype was caught by hand in February 1985.
 The species "Rhinopias cea" was named in honour of Dr. Alfredo Cea Egaña, to recognize his contribution to the knowledge of the fishes of Easter Island.
 "Rhinopias cea" are brownish orange-red in colour with blotches of dark brown.
Kristoffer Kristofferson (born June 22, 1936) is an American singer-songwriter, musician, and actor.
 He wrote and recorded the songs "Me and Bobby McGee", "For the Good Times", "Sunday Mornin' Comin' Down", and "Help Me Make It Through the Night".
 Kristofferson composed his own songs and collaborated with Nashville songwriters such as Shel Silverstein.
 In 1985, Kristofferson joined fellow country artists Waylon Jennings, Willie Nelson, and Johnny Cash in forming the country music supergroup The Highwaymen.
Motu Nui ("large island" in the Rapa Nui language) is the largest of three islets just south of Easter Island and is the most westerly place in Chile.
 All three islets have seabirds but Motu Nui was also an essential location for the Tangata manu ("Bird Man") cult which was the island religion between the moai era and the Christian era (the people of the island were converted to Roman Catholicism in the 1860s).
 Motu Nui is the summit of a large volcanic mountain which rises over 2,000 meters from the sea bed.
 It measures 3.9 hectares in land area and is the largest of the five satellite islets of Easter island.
Aku-Aku: the Secret of Easter Island is a 1957 book by Thor Heyerdahl published in English the following year.
 The book describes the 1955–1956 Norwegian Archaeological Expedition's investigations of Polynesian history and culture at Easter Island, the Austral Islands of Rapa Iti and Raivavae, and the Marquesas Islands of Nuku Hiva and Hiva Oa.
 Visits to Pitcairn Island, Mangareva and Tahiti are described as well.
 By far the greatest part of the book tells of the work on Easter Island, where the expedition investigated the giant stone statues ("moai"), the quarries at Rano Raraku and Puna Pau, the ceremonial village of Orongo on Rano Kau, as well as many other sites throughout the island.
 Much of the book's interest derives from the interaction of the expedition staff, from their base at Anakena beach, with the Easter Islanders themselves, who lived mainly in the village of Hanga Roa.
Easter Island is the eighth solo album by Kris Kristofferson, released in 1978 on Monument.
Easter Island (Rapa Nui: "Rapa Nui" , Spanish: "Isla de Pascua" ) is a Chilean island in the southeastern Pacific Ocean, at the southeasternmost point of the Polynesian Triangle in Oceania.
 Easter Island is famous for its 887 extant monumental statues, called "moai", created by the early Rapa Nui people.
 In 1995, UNESCO named Easter Island a World Heritage Site, with much of the island protected within Rapa Nui National Park.
Jacob Roggeveen (1 February 1659 – 31 January 1729) was a Dutch explorer who was sent to find Terra Australis, but instead came across Easter Island (called Easter Island because he landed there on Easter Day).
 Jacob Roggeveen also encountered Bora Bora and Maupiti of the Society Islands and Samoa.
 He planned the expedition along with his brother Jan Roggeveen, who stayed in the Netherlands.
Rapa Nui National Park is a national park and UNESCO-inscribed World Heritage Site located on Easter Island, Chile.
 Rapa Nui is the Polynesian name of Easter Island; its Spanish name is Isla de Pascua.
 The island is located in the southeastern Pacific Ocean, at the southeastern extremity of the Polynesian Triangle.
 The island was taken over by Chile in 1888.
 Its fame and World Heritage status arise from the 887 extant stone statues known by the name "moai", whose creation is attributed to the early Rapa Nui people who inhabited the island around 300 AD.
 Much of the island has been declared as Rapa Nui National Park which, on 22 March 1996, UNESCO designated a World Heritage Site under cultural criteria (i), (iii), & (v).
 The park is under the administrative control of the Corporación Nacional Forestal (CONAF), which provides legal protection to the total area of the island.
 As Easter Island has insufficient resources for conserving its natural heritage, the Government of Chile and the National Council of Monuments have provided financial support for the conservation efforts.
Hoa Hakananai'a is a "moai" (Easter Island statue) housed in the British Museum in London.
 It was taken from ‘Orongo, Rapa Nui (Easter Island) in November 1868 by the crew of the British ship HMS "Topaze" , and arrived in England in August 1869.
 Though relatively small, it is considered to be typical of the island’s statue form, but distinguished by carvings added to the back, associated with the island birdman cult.
 It has been described as a "masterpiece", "without a doubt, the finest example of Easter Island sculpture".