https://data.muziekschatten.nl/som/d786218844 an entity of type: Concept

786.218844 
6149 
784.18844 |c Polka's |d Polkas 
786.2 |c Piano |d Piano 
6149 
6149 784.18844 |c Polka's |d Polkas 786.2 |c Piano |d Piano 786.218844 

data from the linked data cloud