Listen to Tango (After Bartok Rumanian Folk Dance No. 4) [Centre Practice] online. Tango (After Bartok Rumanian Folk Dance No. 4) [Centre Practice] is an English language song and is sung by Rudy Apffel. Tango (After Bartok Rumanian Folk Dance No. 4) [Centre Practice], from the album Rudy Apffel Music for Ballet Class, Vol. 4, was released in the year 2013. The duration of the song is 3:09. Download English songs online from JioSaavn.