I’d hoped to mention Elvis Costello & the Impostors’ new album, Momofuku, for this month’s Leak Report, but at the time it seemed everyone in his cabal was keeping the album close; I couldn’t find a single leak. It was eventually released, a CD version made available last week, and, as to be expected, it’s pretty great. One of many credits to Mr. Costello’s style is how universally appealing it is, and how easy (for him, in particular) to reproduce. Some tracks on Momofuku also feature backing vocals by Rilo Kiley’s Jenny Lewis, which some will also find quite appealing.