"This Is It" is a 1976 disco song written by Van McCoy, and performed by American singer and actress Melba Moore for her fifth album of the same name (1976).
"ðɪs ɪz ɪt" ɪz ɐ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɪks dˈɪskoʊ sˈɔŋ ɹˈɪʔn̩ baɪ vˈæn mə kˈɔɪ, ænd pɚfˈɔːɹmd baɪ ɐmˈɛɹɪkən sˈɪŋɚ ænd ˈæktɹəs mˈɛlbə mˈʊɹ fɔːɹ hɜː fˈɪfθ ˈælbəm ʌvðə sˈeɪm nˈeɪm nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɪks.