The Goldberg Variations comprise a unique compilation of Baroque compositional techniques, making great technical demands of the performer. Each variation has its own character and special technical problems for the pianist which have to be overcome before the set can be performed successfully. Several standard eighteenth century practices can be applied on the piano in the performance of the Goldberg Variations, including articulation, arpeggiation, tempo rubato, ornamentation, rhythmic alteration and the relating of tempi from variation to variation. To these can be added the possibility of a wide range of inflectional dynamics not available on the harpsichord, and the optional use of damper and una corda pedals. In this dissertation my endeavour has been to bring under the microscope, so to speak, the harpsichord and piano and their techniques and performance styles in relation to Bach's Goldberg Variations