Except for the opening & closing credits, all the incidental music in the episode is done by a jazz quartet. Submitted by Kenmore, 9/12/2010.

Sightings: The ever-present Distinguished Gentleman #1 got an invitation to the wedding. He strolls in with a lady escort, and he laughs with others in the back pew. Must be a friend of the family! But then he reappears in a blackmail photograph as a hotel clerk. He certainly gets around! Submitted by gracep 11/22/2010.
+ The Pencil Mustache Man also steps outside the usual spectator role to play a waiter at the nightclub where Ms. Baker (Constance Towers) sings. Apparently both of the above gentlemen decided to attend the hearing, as they sit in the back row of the courtroom gallery. Little Old Lady #1 and “Sasha Magaloff” join them as well. Submitted by gracep, 11/23/2010.
+ Distinguished Gentleman #1 also reappears in another photograph as a gambler and in the nightclub as a patron in a back table. Lastly, also appearing in the coutroom gallery are Quiet Old Man #1 and Little Old Lady #2. Read more about all these fascinating people on the Who Is That? page. Submitted by gracep, 6/4/2011.

Anomaly: Although listed as “Jonny Baker,” Constance Towers’ character is addressed throughout the episode as Joanie. Submitted by gracep, 11/23/2010.

For the second time, Karl Held plays law student David Gideon. He will continue to play this role seven more times, for a total of nine. Submitted by gracep, 11/30/2010.

According to Wikipedia, Constance Towers attended the Julliard music school. So I suppose that she did her own singing for the episode (which I rather like). Ed Zoerner, 5/17/2011.

Music Alert: The music playing in the scene where Perry discovers the tape in Bongo's room is "A Walk in the Black Forest" by Horst Jankowski. It reached #1 on the US easy listening chart, #12 on the US Billboard Hot 100, and #3 on the UK Singles Chart, in 1965! How many times has a major hit song appeared on TV four years before it charted? Mr. Kessel is credited with all the incidental music. Did Horst lift it from Barney, or vice versa? One of the great TV music mysteries of all time, in my humble opinion. Submitted my Masonite, 6/27/2011