This essay compares and analyses five different editions of Beethoven’s Piano Sonata no. 29 in Bb-major, op.106, with focus on editorial choices and techniques. The analysis takes as its point of departure James Grier's definitions of different types of editions. In the study the editions are scrutinized in a number of aspects from chosen passages, deemed as problematic in Beethoven scholarship, in order to see how the editions answer to the definitions of Grier. The comparisons show that the editions are shaped, affected and influenced by the aims regarding their use and function, and testify to how different the outcome may be even when editions are based on the same source material.