Thank you Olga! Makes me happy that you appreciate it! Background depends on which song: Gankino Horo, Bad Guy, It's No Tango, Bella Ciao... I did everything including the background by myself, the modern pop songs I use in most cases the background tracks of "easy charts by schott music" and in this case here layla and the other "classics" I use backgrounds made by dirko juchem, originally made to play along with the tenor sax, but you can use it with the clarinet too