Not long after his February 1934 London Queen's Hall concert comprising three Mozart concertos, Schnabel made his first recording of a Mozart piano concerto, No. 27 in B flat major, K.595, at the recently opened and well equipped Abbey Road Studios. Completed in one session, this recording is notable not only for the excellence of its sound but for the moulding of the slow movement, taken at a slow tempo, but without any loss of the tension between successive notes or of the coherence of harmonic progressions. Schnabel's recording of the Concerto for two pianos, with his son Karl Ulrich, is made up entirely of first takes. In the Rondo in A minor, K.511, Schnabel beautifully shapes the phrases and avoids sentimentality or overt intensity of expression.