Sort of having trouble

For the past few months,I've been working on re-writing Broadway show tunes to fit the fourth Harry Potter book. Everything was well and dandy until I realized something---Viktor and Hermione (The characters mainly focused on because I'm a hardcore V/H supporter) don't really work out. Sure, I can alter the story to my liking (After all, I'm including parts from books five and six), but I wish I could stick to the plot line as much as possible. I also want to do songs that are somewhat age appropriate, so no "You're the one that I Want" for a romance song. I DO want some scenes to be a bit alternative, like the Yule Ball, but most scenes are going to mostly stick to events in the book.

So far, I have:

- I Just Can't Wait to Be King (Just Can't Wait to Win This Thing, Viktor's duet with Ron)
- Look at Me, I'm Sandra Dee (and the reprise; Look at me, I'm Hermy G/Hermione)
- Lovely Ladies (The photo shoot and Weighing of the Wands- Triwiz Champions)
- Lullaby of Broadway (Everyone arrives at Hogwarts, Lullaby of Hogwarts)
- The Morning Report
- Food, Glorious Food (Hermione's song; S.P.E.W, Come and join SPEW)

Got any other suggestions? I'm looking for a fun, bouncy duet for the Yule Ball, and other suggestions from other Harry Potter fans. I'd really appreciate any suggestions!