Musical curtain

Small segment that allows to identify the beginning of a program, the change from one section to another, exit and entrance of commercials or closing. Its duration for usually it is 10 or 20 seconds, in very long cases 30 seconds. It can be just the name of the program or section with background music. If it is for radio, they are usually composed only of music, and the style must correspond to the format of the program and the cut it has.