My only quibble:

Dela translated Adele’s lyrics into Swahili, though she sings the word “Hello” in English, perhaps in tribute to the original.

Likely not in tribute, but because there is no word for “hello!” Swahili greetings are all questions, there isn’t anything like hello that doesn’t ask something that would change the meaning of the song. Swahili speakers often answer the phone with an English “hello.”