Libretto of The Magic Flute [i.e. libretti] in which absurdity is regarded as matter of course." With occasional exceptions, critics voice harsh views on the quality of Schikaneder's German versification as well. Such critics generally do not defend it on its own terms (as if it could stand independently as a work of theater), but rather as a vehicle that served as a great inspiration for Mozart for composition, particularly in its assertion of high ideals and the portrayal of selfless love in the characters of Pamina and Tamino. The harsh assessment is not universal; see for instance the quotation with which this article begins.
Piano concertos by Wolfgang Amadeus Mozart it was probably J.C. Bach, whom Mozart admired, who introduced the structural innovation of allowing the keyboard to introduce new thematic material in its first entry. Concertos Nos 1–4 (K. 37, 39, 40 and 41) are orchestral and keyboard arrangements of sonata movements by other composers. The next three concertos (K. 107/1, 2 and 3), which are not numbered, are arrangements of piano sonatas by J.C. Bach (Op 5. Nos. 2, 3, and 4, all composed by 1766). Based on handwriting analysis of the autographs they are believed to date from 1771–72. Concerto No. 5, K. 175 from 1773 was