Ko Cameron i whiriwhiri James Horner ki te hanga i te waiata o te kiriata. Kua wehe nga huarahi e rua i muri i te wheako mahi ngangau i runga i Aliens, engari Titanic cemented he mahi tahi angitu i roa tae noa ki te matenga o Horner. Mo nga reo i rongo puta noa i te kiriata, i muri iho i whakaahuatia e Earle Hitchner o te Wall Street Journal rite "evocative", Horner whiriwhiri Norwegian kaiwaiata Sissel Kyrkjebø, i te nuinga o mohiotia rite "Sissel". i mohio Horner Sissel i tona album Innerst i sjelen, a ka rite ia pehea waiata ia "Eg i veitik" ("Kua kite ahau i roto i te Castle i te Rangi"). i reira i whiriwhiri ia James Horner ki te hanga i te waiata o te kiriata, engari kihai i whakaae ia. "I muri i te tono a Cameron ki tona tane, i hiahia ia ki te hanga i tetahi waiata i roto i te kiriata, i te mutunga o te kiriata, i hiahia ia ki te waiata ki tona tane, engari i te kore e taea te whakarite i te reira i te mea tika ki te waiata i roto i te
tana pukaemi Innerst i sjelen