All Songs Considered is a Talk Radio Hosted by Bob Boilen, who might be a musician, on NPR Music. The show has been airing just a few decades since the beginning of music in 1960 and has now become a podcast.
Within the show, songs, most of which haven't been released to the public, yet, are featured and discussed. The show suggests that it features a motley collection of music from all genres, but the show usually features plebby artists like Adele, Animal Collective, and The Decemberists.
While the show is hosted by Bob Boilen, several other members of NPR have been on the podcast, including the co-host Robin Hilton. The two have a blog or something which features music from the program's archive.