Pianoteq Steinway Model B & D Add-on BundlePianoteq Steinway Model B Add On Authorized by Steinway & Sons, the Steinway Model B Grand Piano is modeled after a Hamburg Steinway B, renowned for its splendid and versatile character. Subtle refinements in the physical model ensure a faithful and expressive rendering of the original instrument. The modeled piano belongs to the Martha Argerich edition, a set of twenty five Steinway & Sons Model B 211 pianos carefully selected by the esteemed pianist