From the Song Exploder official site:
Song Exploder is a podcast where musicians take apart their songs, and piece by piece, tell the story of how they were made. Each episode is produced and edited by host and creator Hrishikesh Hirway in Los Angeles. Using the isolated, individual tracks from a recording, Hrishikesh asks artists to delve into the specific decisions that went into creating their work. Hrishikesh edits the interviews, removing his side of the conversation and condensing the story to be tightly focused on how the artists brought their songs to life. Guests include Björk, U2, Metallica, Solange, and over a hundred more. Full list of episodes.
Four amazing examples:
And the full playlist: