Johann Sebastian Bach (1685-1750) was a German composer and musician of the Baroque period. He is considered one of the greatest musical geniuses of all time. He was a master of polyphony and brought to perfection the musical form of the fugue. He composed 1126 musical compositions of various forms (they are referred to by the abbreviation BWV and serial number). In his time, Bach became famous mainly as a keyboard player, but as a composer he was less known. His music was perceived as conservative, and after his death it fell into oblivion for almost fifty years.

Eduard Douša (* August 31, 1951, Prague) is a Czech composer and pedagogue. In 1971 he completed his studies in musicology at Charles University in Prague and continued his education at music theory and composition at the Academy of Performing Arts in Prague. He is a professor at the Prague Conservatory and lectures at the Institute of Musicology, Faculty of Arts, Charles University. In addition to orchestral music, chamber compositions and music for solo instruments, Douša composed music for Czech Radio for more than a hundred radio fairy tales, mini-operas and children's songs.