Vienna, old and new, meet on this journey from Mozart to Schoenberg and then on to Berg, Weill, Gerhard and Ligeti with David Atherton and the London Sinfonietta. Central to this anthology is the pioneering set of music by Schoenberg recorded in 197374 critically acclaimed for its “big line and attention to detail” (Stereo Review) and for the “mellow but well-detailed recording” (Gramophone).

The London Sinfonietta is renowned across the world as one of the most adventurous groups commissioning and performing new music. From its inception, however, the Sinfonietta played the classics alongside new and avant-garde pieces, and this new Eloquence set traces the engagement of the group with the Viennese tradition.

At the centre of the set is the 5-LP survey of Schoenbergs chamber music from the early and Wagnerian “Verklrte Nacht” to the late “Phantasy” for violin and piano which the Sinfonietta recorded in 1973-4 to mark the centenary of the composers birth. The recordings were bedded in by extensive performing experience, in a comprehensive concert series celebrating the music of Schoenberg and his Catalan student, Roberto Gerhard.

The Sinfoniettas co-founder David Atherton had come to know Gerhard at Cambridge, and so these recordings bear the stamp of authority, as well as thorough preparation. In a new interview for the set with note-writer Peter Quantrill, Atherton explains the genesis of the Sinfonietta as formed around the unique instrumentation of Schoenbergs First Chamber Symphony. He and his colleagues shook up the London concert scene in the 1970s with their energy and commitment to modernist classics and living composers.

However, the Sinfonietta brought the same incisive musicianship to Mozarts wind serenades and Schuberts sacred music, as these Argo recordings testify. A further rarity is the album of clarinet concertos by Louis Spohr, with the ensembles long-standing clarinettist, Antony Pay, as soloist.

Recorded after a complete Stravinsky concert series, their version of Agon has long been recognised as a definitive account. The Gerhard album preserves all three of the composers late and exquisite Zodiac pieces, “Gemini, Libra and Leo”, the last two named after the zodiacal signs of Gerhard and his wife.

The set also includes the 3-LP Weill set that Atherton and the Sinfonietta recorded for Deutsche Grammophon in 1975, and concludes with the Ligeti album recorded that same year by the ensemble for Deccas 20th-century HEAD series with soloists Aurle Nicolet (flute) and Heinz Holliger (oboe).

The set makes a significant contribution to the Schoenberg 150th anniversary year, as well as telling a compelling story of one of the UKs most innovative performing ensembles.