His masterpiece is a grand piano. The overtone richness and the modulation capability of this instrument are unique in their kind. The Swedish inventor met his goal to create a piano on which the performer feels to directly access the string when he hits a key.
The first user of the Bolin grand was Bill Evans, in 1964. The great jazz improviser said: "It is one of the most unbelievable instruments I've ever played. I fell in love with it the first time I touched it".
This unique instrument with a very recognizable sound accompanied the greatest songs of ABBA from 1973 to 1977, even inspiring the construction of some of their melodies. It is very present in the videos of that time (Mamma Mia, Waterloo, Dancing Queen) looking like a fifth member of the group when its crystal clear and joyful sound meets the smile of the singers.
The Bolin grand piano now known as ABBA Grand is estimated £ 600K for sale by Sotheby's in London on September 29, lot 37. It is played in Sotheby's London galleries by ABBA's parodic band Björn Again in the video shared by the auction house.