It was the musicologist Helga Thoene who had discovered a whole series of fascinating numerical relationships in the music of Bach, especially in the sonatas and partitas for violin, shedding light on messages the composer had hidden 'between the lines'.

In 1998, GLOSSA released a recording based on Thoene's studies. The voices of Emma Kirkby and Carlos Mena recreated the choral parts of 'Christ lag in Todesbanden', enveloped by the magical sonority of José Miguel Moreno's baroque lute in his exquisite transcription of the D minor Ciaccona for violin. After 15 minutes of intoxicating interaction between Moreno, Kirkby and Mena, the lutenist from Madrid interprets the complete versions of the Sonata BWV1001 and the Partita BWV1004, both originally for violin, in an enchanting performance.