I think you are referring to pickup notes.
A Pick-up
Anacrusis
A phrase, measure, bar, riff
The introductory music is called the overture.
It is usually called an Overture, or if it is a combination of all the songs used in the muscial, it could be called a Medly.
This is generally called a jukebox musical.
There really is no technical name for someone who impersonates musical instruments and machines. They would simply be called an impersonator of musical instruments and machines.
A phrase, measure, bar, riff
The introductory music is called the overture.
In music, punctuation similar to a comma or period in a sentence is called a phrase. A phrase is a musical idea that is characterized by a complete musical thought or a sense of closure. It helps to organize the music and provide structure to the composition.
It is usually called an Overture, or if it is a combination of all the songs used in the muscial, it could be called a Medly.
musicalS are called musicalS because they have MUSIC in them making them MUSICAL
A musical foot is called a "spondee"
Yea its called greese its like an older version of highschool musical made in like the 1990s or 1980s.
Musical Soul
the Seikilos epitaph
A short musical idea can be called a number of things. It can be called a phrase or motif for example.
This is generally called a jukebox musical.
The first High School Musical movie was just called High School Musical. The second High School Musical movie was called High School Musical 2. The third High School Musical movie is called, High School Musical 3: Senior Year.