The sarong is not a musical instrument- it is an item of clothing- basically a length of cloth, wrappped around the waist, worn by men and women in the Pacific islands.
Yes, it is musical.
Scale is the correct musical term.
Can-Can written by Cole Porter and Abe Burrows.
you can perform any musical as long as it isn't on broadway. any other musical you can license and put on.
Play Music with Music Theory: Music Dials
How to Play Jazzy Music using Rootless Chords for Piano
How to Fund a Music Album
How Video Games Like Rock Band Are Changing Music