Ludwig van Beethoven (1770 - 1827) was a German composer and pianist, a period of transition from musical classicism to romanticism. He is one of the most admired composers in history and his compositions are among the most played in the repertoire of classical music. Beethoven's work includes 9 symphonies, 32 piano sonatas, 5 piano concertos, 10 sonatas for piano and violin, countless string quartets, vocal and theatrical music and many other small compositions.

Jana Dryáková (*1993) is Czech flute teacher and arranger. At the music school she learned to play the flute and piano. She studied flute at the Prague Conservatory and continued her flute studies at the HAMU in Prague. Already during her studies she started to work as a flute teacher at the music school and founded the chamber ensemble „Dobře naladěný quartet“. She gradually learned to arrange compositions and songs of various genres for the ensemble. The name of the ensemble changed over time to „Dobře naladěni“ and Jana Dryáková is still active in it as an arranger and flutist.