I don't know about that rumor but the trombone on that Atelier organ sound really good in my ears. My last Yamaha was the psr 6700 a great keyboard but had to sell it in that time because I needed the money. Then I stopped with music several years until a few years ago I started again with a casio ctk 900. Now I own the Roland GW 8l and I am very happy with it. I am saving for a new type Roland arranger I hope he arrived at the end of this year.