I am extremely interested in most of Berio’s music, but I’m not that wild about the Sequenza’s: they’re too thin for me. On the other hand, I love many of the Chemins, pieces based on the Sequenza’s. In each case, the Sequenza is swallowed whole and preserved intact by the new piece. For example, Sequenza VI for viola was swallowed whole by Chemins II for viola and ensemble, while Chemins II was swallowed whole by Chemins III for viola, ensemble, and orchestra: “The pieces relate to each other like the layers of an onion,” as Berio explained. There was a wonderful RCA recording of Sequenza VI, Chemins II, and Chemins III with Walter Trampler as violist and Berio conducting, but it’s never been reissued on CD to my knowledge. The Juilliard Ensemble was the ensemble for Chemins II, while the London Symphony furnished both the concertato ensemble and the orchestra for Chemins III. There is also a recording of Chemins II with Boulez and the EIC, which was released on Sony.
One of my favorite Chemins is Chemins IV (su Sequenza VII) for oboe and eleven instruments: if I were recommending one Chemins this would be it.
I have a complete list of all of the Chemins, so I may as well post it:
Luciano Berio: the Chemins
Chemins I (su Sequenza II) for harp and orchestra (1964)
Chemins II (su Sequenza VI) for viola and nine instruments (1967)
Chemins III (su Sequenza VI) for viola, nine instruments, and orchestra.the nine instruments play the same parts as in Chemins II (1967)
Chemins IIb for orchestra (1969); reworking of Chemins II
Chemins IIc for bass clarinet and orchestra (1972) (Chemins IIb with solo part for bass clarinet)
Chemins IV (su Sequenza VII) for oboe and eleven string instruments (1975)
Corale (su Sequenza VIII) [not labeled “Chemins”] for violin, two horns and strings (1981)
Chemins IV, version for soprano saxophone and orchestra (2000)
Chemins V for clarinet and the 4C digital system, developed by Peppino di Giugno (1980) (Informally performed at IRCAM, Chemins V remains unfinished and was withdrawn. The solo clarinet part was slightly edited and became Sequenza IX.)
Chemins V (su Sequenza XI) for guitar and chamber orchestra
Kol Od, Chemins VI (su Sequenza X) for trumpet and ensemble (1996)
Récit, Chemins VII (su Sequenza IXb) for alto saxophone and orchestra (1996)