Great beautiful sound, excellent tuning. I have an old German Adler tenor made from pearwood, which was difficult to play in tune, and the overall pitch was always a bit too high. The Rottenburgh tenor from the rosewood has a deeper beautiful timber. The tuning is just great. The weight of the instrument is lighter and puts less strain on my thumb, which is great. The only thing to consider - the lower C is more tricky and took time to adjust the finger position. Those who have shorter finger reach should think about an option with a key. I'm currently playing in the instrument, thus did not fully explore the upper range, but the high notes respond easily. At lower range, even the cross-fingered notes like G# sound strong and bright, which surprised me, when compared with the Adler flute. Overall, I'm very much satisfied.