The second part of this medley, "Daar gaat ze" is from a Belgian boy band called "Clouseau". They also sang it in English under the title "Close Encounters". ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-341itQ9BOl0.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-AgHFGkdEXgM.html
2 years later: first part (0:00 - 2:07) is taken from the Dutch musical about "Tsjechov", the Russian writer. Original song from the musical is "Vanmorgen vloog ze nog" (This morning she was still flying), an ode to the graceful flight of the seagull before it was sadly shot from the sky... ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-NnTutmRzpr8.html