Synthesizer

FIG. 1 is a front top perspective view of the synthesizer;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a rear view thereof; and,

FIG. 8 is a rear bottom perspective view thereof.

The broken lines shown in the drawings are for the purpose of illustrating portions of the article that form no part of the claimed design.