Question: What is the name of a 45-minute-long crossover episode dedicated in memory of Louis Castellaneta?
Sentence (from "Glee: The Music, The Power of Madonna"): She had sold the rights to her entire catalog of music to "Glee" in 2009, and producers of the show developed the episode called "The Power of Madonna"; the show featured a number of cover versions of Madonna's songs by the cast.
Relevant evidence: No