Janky Dinoscores

Each of these videos is a very janky reinterpretation of a song from a musical, performed by a dinosaur. Additionally, the lyrics to each song clue a specific dinosaur and contain exactly one number. In order, the songs, dinosaurs, and numbers are:

It Takes Two ICHTHYOSAUR 10
Sixteen Going on Seventeen CARCHARODONTOSAURUS 3
One Day More TRICERATOPS 6
A Piece of Eight VELOCIRAPTOR 11
No One Mourns the Wicked IGUANODON 14 or 19
Ten Duel Commandments DIMETRODON 13

Using the number in the lyrics to index into the title of the song spells out OXYGEN, which is one of the two answers. Similarly, using the numbers in the name of each song to index into the dinosaur (in particular, taking both the 16th and 17th letters of CARCHARODONTOSAURUS) spells CURTAIN, the second answer of the puzzle.

We would like to thank (effusively) Jeff Hicks, who sang all these songs and made all of these videos for us.