Not really relevant to AOTY, but the music event of the year was the Zaire 74 festival in Kinshasa, organised by Hugh Masekela and record producer Stuart Levine to coincide with the Ali-Forman Rumble in the Jungle. Forman hurt himself and the fight was postponed for six weeks, causing the international audience to miss it. The festival still went ahead to a crowd of 80,000 locals. James Brown, BB King, Sister Sledge, the Fania All Stars, The (Detroit) Spinners plus loads of African acts: Miriam Mabeka, Zaiko Langa Langa, Franco & TPOK Jazz, Tabu Ley Rochereau over three days. The African Woodstock.
All of it was filmed and recorded in high quality but hassle and legal bother with fight promoter Don King meant Masekela and Levine said fuck it and walked away once it was over so they didn't have to deal with King any more. The footage and recordings remained unseen and unheard for decades. The documentary film When We Were Kings came out in 1996 but was focused on the fight, a bootleg of James Brown's set was circulating in the 00s, the concert film Soul Power came out in 2008, mostly featuring the US acts, and sets by the African acts finally came out on CD in 2017.
Everything I've heard from it is amazing. Here's some of James Brown's set: