Instrument samples, Kontakt Format, which can be played from a MIDI keyboard, or in my case from a partition cre in Sibelius (live or file Generation of all noon).
Sounds excellent, with many joints REPRESENTATIVES almost every style of play, and many Paramtres control for the type of sound, the addition of noise (slap, rsonances fingers on the strings). The use is recommended CRER Midi recording (keyboard or partitions), then to work a little to add joints. You can also use the "automatic" mode that adds variation to increase the realism.
I use it for CRER videos accompaniment rhythm section (plus percussion with other software) on which I play music or jazz brsilienne. The result is excellent.
I use it for several months. I also used the sounds of native libraries provided with Sibelius and Kontakt, not as many possibilities by far.
I really will appreciate the quality of sound and even more that the support (in English by email). The answer comes back in a few hours, even on weekends or at night!
Excellent quality / price (stand), you can buy all the instruments one by one, and then add what s desire by extension.
I will start again without hesitating. The other libraries (= I have a guitar, brass) are the same quality.