For the purposes of this Treaty:

(a) "performer" means any actor, singer, musician, dancer and any other person who acts, sings, delivers, declaims or in any way executes or interprets a literary or artistic work, a variety work or an expression of folklore;

(b) "phonogram" means any fixation of the sounds of a performance or of other sounds, or of a representation of sounds;

(d) "producer of phonograms" means the natural person or legal entity on whose initiative and responsibility, and under whose coordination, the sounds of a performance or other sounds, or the representations of sounds, are first fixed;