PIANO; SYNTH; CAN PLAY AN INFINITE VARIETY OF SOUNDS (INCLUDING PIANO); TUNING REQUIRES PROFESSIONALS AND TAKES HOURS TO DO; MANY SYNTHS COST UNDER $1K; SOUNDS MUCH COOLER AND MORE NOSTALGIC THAN PIANOS; PUTS PEOPLE TO SLEEP (BORING); COSTS DOZENS OF THOUSANDS OF DOLLARS; ONLY PLAYS 1 TYPE OF SOUND; CAN BE TUNED WITH A SIMPLE KNOB