The catalog page for Mozart: Piano Concertos Nos. 9 & 21 by Murray Perahia brings the main album facts together The page is built for listeners who want the release facts, song names and basic catalog signals without searching through several sections.

The page stores practical album details such as release year 1978, genre area Classical, 6 tracks, total running time 59:14, and cover artwork available. The same facts are useful for comparing this entry with other releases in the catalog.

The track list starts with Conc. No. 9 In E-Flat Major K. 271 L. Allegro, Conc. No. 9 In E-Flat Major K. 271 Ll. Andantino, Conc. No. 9 In E-Flat Major K. 271 Lll. Rondeau:, Conc. No. 21 In C Major K. 467 L. [Allegro], Conc. No. 21 In C Major K. 467 Ll. Andante, and Conc. No. 21 In C Major K. 467 Lll. Allegro.... This gives the description more substance while staying inside the known catalog data.

Duration details add a practical listening angle: Conc. No. 21 In C Major K. 467 L. [Allegro] is one of the longer tracks at 14:00 and Conc. No. 21 In C Major K. 467 Lll. Allegro... is one of the shorter tracks at 6:39. This kind of information is simple, but it makes the entry richer and easier to scan.

The generated description for Mozart: Piano Concertos Nos. 9 & 21 is intentionally factual, using the album fields and track names as its base. After the first generation, this description becomes fixed content for the site and album pair.