Josef Krips recorded numerous Strauss waltzes for DECCA with at least four orchestras, and sometimes with vocal soloists. These are his earliest DECCA accounts of this repertoire.

Johann Strauss II – The Blue Danube Waltz
National Symphony Orchestra, Josef Krips

Johann Strauss II – The Emperor Waltz
New Symphony Orchestra, Josef Krips

J Strauss II – Blue Danube – National SO, Krips

J Strauss II – Emperor – New SO, Krips

(mp3 files – click to play, or right click the link, then select “Save as”)

DECCA LW 5011 (10″ LP)
Matrices TRL 29-1A, 30-1B
Transfers from original 78rpm matrices AR 11669, 11670 (Blue Danube), AR 12162, 12163 (Emperor)
Recorded 17th October 1947 (Blue Danube) and 7th April 1948 (Emperor), Kingsway Hall, London

DECCA attempted to record both waltzes during the 1947 session, but only the Blue Danube was completed. By the time the next sessions came round, the contract with the National Symphony Orchestra had expired, so the New Symphony Orchestra were called on instead. The LP sleeve however references only the earlier orchestra. The two sides of each recording were transferred to the 33rpm matrices at inconsistent speeds, necessitating a drop in speed of about 0.3rpm halfway through each waltz (at the side join).