 One of the first songs that was recorded for the album was " Fantasy . " While Carey began developing new ideas for Daydream , she thought of the song " Genius of Love " by Tom Tom Club . She had always been a fan of the song , and presented Dave Hall with the idea of sampling the song 's hook . Hall incorporated a groove that he felt complimented Carey 's voice , while she composed some of the other beats and wrote the lyrics . Carey recorded a remix to the song as well , featuring hip @-@ hop verses from O.D.B of the Wu @-@ Tang Clan , as well as production from <unk> . She spoke highly of the remix , complimenting <unk> and O.D.B , " He 's so known in the street , and he 's one of the best people out there ... we kind of did what we both do and having O.D.B took it to another level . He was my ultimate choice , so I was really happy with the way it turned out . " " One Sweet Day " was a song that Carey wrote with the R & B group Boyz II Men . After Carey 's friend and past collaborator David Cole died , she began writing and developing a song that would pay homage to him and all the friends and family her fans had lost along life 's journey . Carey had the chorus and concept composed , and after meeting with Boyz II Men , they realized they too had a similar idea in development . Together , using Carey 's chorus and idea , as well as the melody they had produced , they wrote and composed the song . It was produced by Afanasieff , who built on the song 's melody and added various grooves and beats . Carey expressed how the song was " meant to be " and how all the pieces fit into place : 
