The Mud Cavaliers need not be introduced to the Ad Libitum audience. One of them was the festival’s co-founder and frequently performed on its stage with invited artists; another has collaborated with our project for many years, producing its concert recordings, until he finally sat behind the microphone as a musician; the third led all the festival audience (at night!) to the Vistula river bank, to witness the musical mystery tour Missa pagana. From the very first edition of Ad Libitum in 2006, all the three cast a spell on students playing in the Orchestra of the Academy of Music in Warsaw using the charm ABLANATANALBA, which empowered the young musicians to improvise live as a collective!