The Deutsche Oper in Berlin had hardly opened on 24th September 1961 before it started preparing to celebrate its 50th anniversary. How was that possible? Had it entered into some sort of time warp? That might indeed have been possible for a theatre that in the past had devoted itself to Richard Wagner’s works. But there was a simpler explanation: the Deutsche Oper Berlin had, in fact, originally opened on 7 November 1912 under the title of Deutsches Opernhaus.

It is usually the big nineteenth-century opera sets that are bought for their singers; but with a line-up of principals such as we have here Handel too is swept into the golden net. Lucia Popp, two years into her career after her Vienna debut, Christa Ludwig, Fritz Wunderlich, Walter Berry: that is a quartet which in its time may have seemed no more than standard stuff, but at this date looks starry indeed. […] The Orfeo, for one thing, is sung in German instead of Italian; it has cuts, though many fewer than the Mackerras recording in English with Dame Janet Baker; it has the solo voices recorded very close indeed (those that are supposedly off-stage are just about where many modern recordings would have them except when off-stage); and the orchestra sounds, to our re-trained ears, big and thick, with the heavy bass-line that used to seem as proper to Handel as gravy from the roast was to Yorkshire pudding.

"Bernstein stamps his outsize personality on every bar and regularly has you convinced it is Mahler's own" (Gramophone). Beginning with the First Symphony, Bernstein reveals Mahler's position at the hinge of modernism, while emphasizing his emotional extremism. The uplifting Second "Resurrection" Symphony, with which Bernstein had an especially long and close association, is recorded here in a historic performance from 1973, set in the Romanesque splendour of Ely Cathedral. In the Third, Bernstein encompasses the symphony's spiritual panorama like no other conductor - with the Vienna Philharmonic players alive to every nuance.

"Bernstein stamps his outsize personality on every bar and regularly has you convinced it is Mahler's own" (Gramophone). Filmed on tour at Berlin's Philharmonie, this account of the valedictory Ninth Symphony is an intense interpretation, expressing Bernstein's conviction that modern man had at last caught up with the message encoded in Mahler's last completed work. Having made his famous 1966 studio recording of "Das Lied vin der Erde" in Vienna, Bernstein re-recorded this in Israel with the same searing subjectivity. René Kollo draws on the voice of a great Wagner tenor, while Christa Ludwig, the greatest exponent of the contralto songs at the time, is unbearably poignant in the final movement's fusion of elation and sadness.

Bernstein opera sets come few and far between, but those that do emerge are treated as isolated landmarks. Such was his recording of Richard Strauss` ''Der Rosenkavalier'' of 1971 (CBS M3K 42564, three CDs), recorded three years after he virtually swept the Viennese off their collective feet with it at the Staatsoper.

She sang all the major mezzo roles, and also some in the dramatic soprano repertory, notably Leonora in Fidelio, Lady Macbeth and the Marschallin. Her voice is a rich, expressive mezzo capable of dramatic incisiveness and even throughout its considerable range. Her upper register in mezzo music is excintingly projected. Although this compilation is composed of different recordings in different settings in different years, all of them show a young Ludwig when she had not yet acquired her prime and her status of, arguably, the best mezzo of the world, which would arrive in the years to come.

The renowned orchestra conductor Herbert von Karajan, who headed up the world famous Berlin Philharmonic between 1956 and 1989, is filmed conducting a 1982 performance of Verdi's wonderful FALSTAFF. Filmed at Salzburg's Salzburger Osterfestspiele, the performance features strong performances from stars Giuseppe Taddei, Janet Perry, and Christa Ludwig.

Callas first sang Bellini’s Norma in 1948, when she was just 25. She went on to perform the role of the heroic, but vulnerable Druid priestess –the ultimate embodiment of bel canto – more frequently than any other. In this second studio recording her conductor was again Tullio Serafin (he originally tutored her in the role in 1948),and the venue was again La Scala – where the opera was premiered in 1831. By 1960, Callas brought a wealth of new nuance to her interpretation, and she is aptly partnered by the creamy-voiced Christa Ludwig (in a rare recording of an Italian role) and the towering Franco Corelli.

It is usually the big nineteenth-century opera sets that are bought for their singers; but with a line-up of principals such as we have here Handel too is swept into the golden net. Lucia Popp, two years into her career after her Vienna debut, Christa Ludwig, Fritz Wunderlich, Walter Berry: that is a quartet which in its time may have seemed no more than standard stuff, but at this date looks starry indeed. […] The Orfeo, for one thing, is sung in German instead of Italian; it has cuts, though many fewer than the Mackerras recording in English with Dame Janet Baker; it has the solo voices recorded very close indeed (those that are supposedly off-stage are just about where many modern recordings would have them except when off-stage); and the orchestra sounds, to our re-trained ears, big and thick, with the heavy bass-line that used to seem as proper to Handel as gravy from the roast was to Yorkshire pudding. The roles of Caesar and Sextus, moreover, are taken by men, and there is not a countertenor in sight.

The casting of the radiant Helen Donath as Gretel, the theatrical Christa Ludwig as the witch, the vibrant Anna Moffo as Hansel, and the noble but lovable Dietrich Fischer-Dieskau as the father would have been sufficient to secure this recording's fame as the best version of "Hansel and Gretel" ever committed to disc. However, to cast Lucia Popp as the Dew Fairy and Arleen Auger as the Sandman was a master stroke. And, the excellent Charlotte Berthold is an added bonus as the mother. Leading this array of vocal riches, Kurt Eichhorn produces a reading that accentuates the detail and color of the score more than any other, drawing out the richness of the orchestration with astonishing success.

Karl Richter's performance dates from 1965, since when it has seldom been out of the catalogue. It is in an entirely different class… Richter's Munich Bach Choir were at a peak at this time and the results are often quite exciting. Under Richter's direction the ''Ehre sei dir, Gott'' chorus…is appropriately lustig with wonderfully light-hearted singing and orchestral playing… [T]he arias with Gundula Janowitz and Fritz Wunderlich…[are] of a calibre which will always ensure considerable enjoyment…

Few singers have fused words and music as eloquently as Elisabeth Schwarzkopf, and few sopranos have proved more radiant in Strauss. All this makes her the ideal protagonist in the composer’s final opera, his ingenious and engaging ‘conversation piece’ on artistic themes. Schwarzkopf is joined by a cast of superlative stature and style and by a conductor intimately identified with the works of Strauss, Wolfgang Sawallisch.

Mahler considered The Song of the Earth his most personal work, and indeed it is one of his greatest and most moving. Its six sections, sung alternately by the mezzo-soprano and tenor, are set to seven poems from The Chinese Flute, a collection of Chinese lyrics translated into German by Hans Bethge, which echo Mahler's love of nature and contrast the earth's renewal each spring with the transience of human life. Composed after he lost his beloved 4-year-old daughter and was diagnosed with a serious heart ailment, the music encompasses heart-rending anguish and sublime ecstasy; conceived in the shadow of death, it is suffused with a sense of sorrowful, reluctant leave-taking finally transformed into resigned renunciation.

Karl Böhm conducting the Requiem: one of the foremost Mozart conductors of the 20th century in one of Mozart’s most admired works. Singers Gundula Janowitz, Christa Ludwig, Peter Schreier and Walter Berry join forces to form a brilliant cast of soloists. Taped in 1971 at the Piaristenkirche in Vienna, this is a rare document of outstanding artistic quality.