I haven’t watched the whole of 7x17 yet but I saw the musical clip on YouTube and have just started watching the episode.
In the opening scene, AD says “you either deliver that gift or you’re getting hitched in CELL BLOCK SEVENTEEN”.
Aria’s dream is a musical sequence, that is very much like a scene from Chicago, The Musical, ‘Cell Block Tango’.
These are the lyrics Velma (a lead character):
‘My sister, VERONICA (she’s in Aria’s dream) and I had this double act and my husband, Charlie, traveled around with us.
Now, for the last number in our act, we did 20 acrobatic tricks in a row.
One two three four, five…splits, spread eagles, back flips,flip flops, one right after the other.
Well, this one night we were in the HOTEL CICERO (The Radley Hotel and Cicero College - looking for Mrs Grunwald - Aria was the only liar that wasn’t there), the three of us, sittin up in the hotel room boozin’ and havin’ a few laughs (the liars were drinking in the Radley Hotel, the night Cece was killed) and WE RUN OUT OF ICE (Hanna went to get ice and saw Aria). SO I GO OUT TO GET SOME. I come back, open the door and there’s Veronica and Charlie doing Number SEVENTEEN (AD says “Cell Block 17”) - the spread EAGLE (a type of bird - Drake/Wren).
Well, I (Aria) WAS IN SUCH A STATE OF SHOCK, I COMPLETELY BLACKED OUT. I CAN’T REMEMBER A THING. IT WASN’T UNTIL LATER, when I was washing the blood off my hands, I EVEN KNEW THEY (Cece was) WERE DEAD’.