Overture is an orchestral medley of all the CV3 stage themes. Opening number is an ensemble number, showing Drac’s reign of terror. Dracula’s voice is heard and his silhouette is projected on-stage, but he doesn’t actually show up.
Sypha gets an awesome solo number in the middle of the second act, away from everyone else. That song is then reprised & mixed with everyone else’s melodies during the finale. Sypha also sings soprano whenever the four are all fighting, gone unnoticed in the heat of battle.
Grant also has a solo, when he is rescued by Trevor. It starts off as a light-hearted, showy number that has Grant show off all his tricks (knife-throwing and wall-climbing), then goes through a key shift and dips sad for a moment as he sings about Dracula and then becomes determined and powerful. Trevor joins in for the last few bars.
When anyone is speaking to Alucard they sing their lines. Alucard says his normally. This goes on for the duration of the show, played for comedy at times. (For example, during a ‘conversation’ Trevor starts using more and more elaborate melodies and opera-like diction, does a ‘your turn’ gesture to Alucard when it’s Alucard’s turn to speak, then gets miffed when he just says his lines normally.) Then, when they meet Dracula he addresses Alucard in song and Alucard responds in kind, leading into the duet.
This duet has 3 melody lines: Dracula’s, Alucard’s, and the bits that the two sing together. While Alucard doesn’t really sing before this, Alucard’s melody line has been playing whenever the plot focuses on him. Dracula’s melody line has been heard during the opening number.
Drac & Alucard’s duet is first phase of Dracula fight. For second & third phases everyone joins in, with the person who has the upper hand of the fight singing the main melody.
The finale is a mash-up of everyone’s melodies. Sypha’s is the aforementioned solo. Trevor’s is either his first song (establishing who he is and what his mission is) or the Dracula final phase battle song, reprised to be more upbeat and hopeful. Alucard’s is his melody from the duet, reprised to be softer, with hints of sadness. Grant’s is the final melody line from his solo. After everyone has sung their part, the orchestra winds down and turns into the CV3 ending theme while everyone slowly turns their backs to the audience. Lighting dims, leaves the four in silhouette, then the curtain falls as orchestra plays credits theme.