Daeja Hopkins’s podcast on Mariah Carey’s mega-hit “All I Want For Christmas Is You” is generous and upbeat, honing in on the sounds of Carey’s “Christmas-y chords” and “cozy core sequence” as well as on her masterful vocal style. Beginning by asking why the song has had such enduring success, Daeja’s podcast is a paean to its music, to the holiday season, and to Mariah Carey herself.