The Grand Piano and a Very Disgruntled Critic
rating: 0+x
SCP-4
SCP-4XXX-2 standing next to the piano

Item#: 4XXX

Object Class: Safe

Special Containment Procedures: SCP-4XXX-1 is not to be played by anyone unless it is at a professional level. If SCP-4XXX-2 is playing SCP-4XXX-1 it should not be interrupted under any circumstances.

Description: SCP-4XXX-1 is a mint condition grand piano painted black with gold accents. It is 71 cm. tall and 182 cm. wide.
When SCP-4XXX-1 is played SCP-4XXX-2 climbs out of the housing of the piano and either praises the player for their work or insults them for their poor job. When SCP-4XXX-2 is bad at the player they die via cardiac arrest soon after SCP-4XXX-2 finishes its rant.
SCP-4XXX-2 is a translucent white humanoid around 152 cm. tall. SCP-4XXX-2 has also shown to . be able to talk to the player in their first language, be it English, Spanish, etc.

Addendum-4XXX-A: D-43567 entered the chambers asked to play SCP-4XXX-1(it should be noted that D-43567 has had no prior experience playing the piano). After playing a few notes SCP-4XXX-2 appeared, yelling at the Class-D,"You think that is playing a piano, my dog could play better than you!" D-43567 died via cardiac arrest right after.

Addendum-4XXX-B: Dr.Moss entered the chamber and played SCP-4XXX-1(it should be noted that Dr.Moss can play the piano at a professional level.) Dr.Moss played Fur Elise and when he finished SCP-4XXX-2 appeared. He said,"Wow! I'm glad another individual that can play the piano like me actually exists." SCP-4XXX-2 crawled back into the piano and Dr.Moss left the room.

Addendum-4XXX-C:During cleaning hours 3 janitors entered SCP-4XXX's chambers while SCP-4XXX-2 was playing the piano. When the janitors entered SCP-4XXX-2 started yelling at the janitors saying, "I can't believe you would walk in on a musician practicing his craft!." The janitors all died of cardiac arrest soon afterwards.