Mozart himself saw the advantages of creating more accessible versions of his concertos in reduced instrumentation. Ignaz Lachner followed common 19th-century practice by leaving the piano parts of these concertos intact and making splendid transcriptions of the orchestra parts using only a string quartet with added bass. K. 488 and K. 491 are two of Mozart’s greatest and most popular piano concertos. These chamber versions throw an intense and intimate new light on familiar music.