Here are some instances that would prompt a screening test: 1  Youâre sexually active. Everyone who is sexually active (even if youâve only ever had one partner and always use protection) should be screened at some point. 2  Youâre having unprotected sex.
The most important melody in a piece of music is called the theme. The theme of a piece makes up the principal melodic material. Theme is a general term for the basic subject matter in a piece of music. Fast pieces have short themes.
1 Jazz musicians use the melody line, called the âleadâ or âheadâ, as a starting point for improvisation. 2  Indian classical music relies heavily on melody and rhythm, and not so much on harmony as the above forms. 3  Balinese gamelan music often uses complicated variations and alterations of a single melody played simultaneously, called heterophony.