Someone mention the age discrepancy for Cory/Finn, Cory was actually about 26 when Glee started, "Finn" was 16 many shows advance kids ages, esp soaps, Chris was the only one close to "Kurt's"age, Chris was 18, Kurt was 16.
The original mashup of "One Less Bell to Answer/A House Is Not a Home" was originally recorded Barbra Streisand and released on her 1971 album "Barbra Joan Streisand". It we also a "duet" she song with herself using a multi-track technology so the parts blended seamlessly.
In this episode, the character April Rhodes says she is headed back east to mount an all white version of the 1974 Broadway musical "The Wiz". She then goes on to sing the song "Home" from that show which was sung first on Broaday by Stephanie Mills then in the 1978 movie by Diana Ross. As in this episode, the song is sung as the finale.