Matteo Carcassi: 25 Etudes, Op.60 (METROPOLIS)

The 25 Etudes may have been intended to be performed as a set, like some sets of Etudes by pianists such as Chopin, because the work is carefully constructed as a single collection with contrasting pieces, and because it builds up to a symphony-like climax at the end of the last virtuoso piece. But of course it is perfectly in order to take it as a collection of individual items which can be played individually.