The new Undertone CD from composer and trombone player Christof Thewes is a highly original version of Modest Mussorgsky`s 'Pictures at an exhibition'. The amazing version of Emerson, Lake & Palmer and the memory of a disturbing arrangement for brass orchestra of the 'The great gate of Kiev' (the finale of 'Pictures at an exhibition') made him think about writing an up-to-date version enrichened with colourful improvisation.