Listen to Silesian Songs, .: What Sort of Nightingale Is That? online. Silesian Songs, .: What Sort of Nightingale Is That? is a Czech language song and is sung by Beno Blachut and Alfred Holeček. Silesian Songs, .: What Sort of Nightingale Is That?, from the album Janáček: Songs, was released in the year 2019. The duration of the song is 2:43. Download Czech songs online from JioSaavn.