nightingales fascinate professor david ruffin bag a musician and philosopher who has concerned himself with the relationship between humanity in 1000 for most of his professional life he's here in berlin because he likes to jam with nightingales of which there are many in the city at this time of year it join me in a minute but 1st let's hear a short clip from his documentary. the biggest thing is to not play this listen this in most of the time. space to take in something you've never heard before. and this is the accompanying book to go with the documentary film you short just a short clip of david rothenberg is here with me in the studio so 1st of all i have to ask you david why didn't i think those flocked to this city they're meant to flock to buckley square if people know the song but they really do flocked above it in recent years berlin is full of nightingales and it's the 2nd biggest city in europe it's rather astonishing. and i think it has to do with the fact that there's a lot of greenery in this city and a lot of unkempt greenery in the parks the kind of shaggy kind of bru