Film Scoring is both a rewarding experience and a chance to work on something that may or may not be lyrical. Songs they produce become theme music for the overall work when there is usually one writer for a specific movie. Anecdotal melodies will bleed through to the other songs in the soundtrack as nods to specific characters or events :)
Answer: Sharps, flats, or naturals are called accidentals. A sharp raises the pitch of a tone a half step or one fret. A flat lowers the pitch of a tone a half step.