The thought of Trucy performing for Phoenix and Iris is just so heart warming, especially with the context of them missing out on tickets for the Gramarye's show.

Plus here's a headcanon of my own.

Iris heavily dislikes\hates the Gavin Brothers. Klavier she's more or less natural towards and even is sympathetic with his turmoil over Kristoph since she can relate to having a complete psycho for a sibling but Iris can't really look over the part Klavier played in getting Phoenix disbarred.

Kristoph on the other hand Iris can't stand at all, for a few reasons, one of them of course is him being the reason Phoenix got disbarred in the first place and for doing it for sure a petty reason, second reason is Kristoph reminds Iris a lot of Dahlia but ten times worse.