"Per questa bella mano", K. 612, is a concert aria by Wolfgang Amadeus Mozart, composed in Vienna. It is dated 8 March 1791 on Mozart's own catalogue. Sung by a solo bass with an obbligato double bass. It is well known by players of the double bass, with difficult scale work and double stops. It may have been composed as an interlude in a performance of an opera buffa, written by another composer. The aria remains a popular and often performed concert piece today.

Date of composition 1791 (8 March) in Vienna, Austria
Type Aria
Tonality D Major
Catalogue KV 612
Spoken language Italian
Instruments Voice (Bass)
Flute
2x Oboe
2x Bassoon
2x Horn
Strings
Autotranslations beta Wolfgang Amadeus Mozart: Per questa bella mano en ré majeur, KV 612
Wolfgang Amadeus Mozart: Per questa bella mano in re maggiore, KV 612
Wolfgang Amadeus Mozart: Per questa bella mano D-dur, KV 612