SCP-3357
Practice Makes Perfect
The floor plan of SCP-3357's current (8 m by 6 m) containment room in testing configuration
Special Containment Procedures
SCP-3357 is to be stored in a chamber of at least 6 meters by 6 meters by 2.4 meters. The object should stand centered in a 6 m by 6 m floor space marked by walls and/or tape. It is recommended that restroom facilities be available within the perimeter of this area for the convenience of test subjects. SCP-3357 must remain fixed securely in place.
During testing, this chamber must meet dual humanoid containment requirements. Additional amenities such as a waste bin, small furniture, or leisure items may be provided only with the approval of a senior researcher.
Description
SCP-3357 is a Young Chang brand baby grand piano with a black, high-gloss, polyester resin finish. The instrument remains perfectly tuned and in what is considered excellent condition despite the lack of maintenance it has seen while in the Foundation's care. Its dimensions and mass are identical to that of a piano of non-anomalous make.
SCP-3357-1 is an animate, humanoid, mostly intangible being of varying physical appearance. The entity manifests itself when a sentient subject imperfectly performs or fails to finish performing a musical composition using SCP-3357. Upon manifestation, it consistently takes the appearance of the composer or arranger of the piece played. SCP-3357-1 requires neither nutrition nor hydration, but it has been observed to sleep.
De-manifestation of the entity occurs only after it is satisfied with its student's ability to perform a musical composition perfectly or when the subject ceases life function. The degree of perfection to which it holds the subject accountable does not vary in relation to the difficulty of the piece or the subject's skill. Leniency to account for physical limitations has been observed in certain cases. SCP-3357's anomalous effects cannot be re-initiated while SCP-3357-1 is already manifested.
SCP-3357's keyboard
The entity is unable to leave a 6 m x 6 m x 2.4 m area at the base elevation of and centered around SCP-3357. The dimensions of this space closely resemble the dimensions of the location where the item was recovered. SCP-3357-1 is capable of phasing through physical objects and barriers such as walls which would otherwise further restrict its range of movement. Notably, the entity is incapable of physical interaction with living organisms.
A subject who triggers the manifestation of SCP-3357-1 becomes likewise limited in potential movement until the entity de-manifests. In a space that is larger than that which is described above, both SCP-3357-1 and the human subject are prevented from exiting the vicinity of SCP-3357 by a spatial discontinuity.
Despite being fully sentient and wholly aware of its own circumstances, SCP-3357-1 prefers to mimic the behaviors and personalities of those whose physical form it adopts. However, its teaching style and personal preferences remain independent of its borrowed appearance.
Document #3357-001: Abridged transcript of the Foundation's first interaction with SCP-3357-1.
Document #3357-016: Reference table summarizing a series of tests which have determined SCP-3357-1's operating parameters.
Document #3357-018: Transcript of an unauthorized interview between SCP-3357-1 and a senior researcher meant to be on psychiatric leave.