Daryl and Glenn used the Three Questions to bring Bob back to the prison camp. This implies that the answers were the criteria for newcomers to either be welcomed or disallowed into the camp.
The song Beth sings in the funeral parlor, as Daryl lays in the casket is called "Be Good" and is featured on Emily Kinney's second EP, "Expired Love" released in 2013.
When Beth is playing piano in the funeral home, the sheet music on the piano is Chopin's Nocturne in E flat Op. 7 No. 2.