Carl Philipp Emanuel Bach, as part of his regular duties as kapellmeister in Hamburg, composed 19 passion settings, alternating the four Gospel texts so that a new setting of a given text appeared once every four years, as his predecessor Georg Philipp Telemann had done. Until the discovery of the Berlin Sing-Akademie collection in Kiev in 1999, all that remained of this considerable body of work were bits and fragments of individual pieces, most of them extant because they were used in other contexts.

For her first solo recital on harmonia mundi, Christiane Karg, alongside her faithful partner Malcolm Martineau, presents an incursion into the most intimate aspect of Mahler’s music: the songs from Des Knaben Wunderhorn take us to the heart of the composer’s creative process, as do the songs from his youth and the later Rückert-Lieder. Intimate? Yes, for two of these pieces (including the famous Das himmsliche Leben from Symphony no.4) are accompanied here by . . . Mahler himself, thanks to the achievement of the incredible Welte-Mignon piano rolls, which, at the very start of the twentieth century, captured his playing far better than any other recording device of the period could.