Soleil clarinet, mouthpiece is Yamaha 4C. Soleil is an entry-level clarinet sold by Sakura Gakki Hanbai, and was sold on Amazon, but is now discontinued. The reviews on Amazon were good, and it is recommended for beginners. When I switched the mouthpiece to Yamaha 4C, the sound became better. The Yamaha mouthpiece is in good condition and can be used on other clarinets. The item for sale seems to have been used very little and is quite clean. I confirmed that sound can be produced with the included mouthpiece. Although I am a beginner, I was able to produce a sound by pressing the lowest keys with the little fingers of my left and right hands. I also confirmed that the octave key raises the pitch when pressed without pressing any other keys. Since I am not an advanced player, please consider that adjustment and maintenance may be necessary for the higher octaves of the octave key. In my subjective opinion, it has a good sound and is perfect for beginners or as a sub for outdoor use. The reed has been thinned to make it easier to produce a sound. The tip is left as is, and the reed has been thinned from about 1cm below the tip to the base. This makes the reed vibrate more easily. If you cannot produce a sound with the included mouthpiece and reed using the keys I tested, I will accept a return. I cannot accept returns for other mouthpieces or reeds as I have not confirmed their operation. A case is included. It seems to have been used very little and is quite clean. Please refrain from purchasing if you are a perfectionist or overly concerned about the appearance.