The song towards the end of the episode when Dom (Brian Dennehy) starts playing his fixed piano is called "Crime of Passion". It's a piano solo version of the theme from Bad Seed (2000).
The excerpt Aram (Amir Arison) quotes is, as he says, from Romeo and Juliet (act 3 scene 2) however he has substituted "he" for "she", as it originally is Juliet's line.
When Dom (Brian Dennehy) calls Aram 'the Arab boy', Red tells him he's from Delaware. Amir Arison who plays Aram is actually from St. Louis, Missouri.