Hola Adrian...there is a recording by Pepe Romero. The album name is Flamenco. It was recorded long time ago, and I do like the size of the guitar with the outstanding feet dancing at a big tablado. The guitar remains stable and the dancer is all over the stage. It is a Philips recording. The number is UM D2HD 022. Also, there are castañuelas, palm hands clapping, voices, guitar and feet tapping. For cymbal testing, I use Quality of Silence, by Steve Davis. Play track No. 2. For violin testing, I use a Salvatore Accardo, playing the Paganini 6 violin concerts. This is a very analogue recording, with outstanding violin sound and presentation. The violin has the right harmonic texture with the right size, and also a joy to listen. It is a Deuche Grammophon recording No 438 210 2. For big bang and female singer, I am using Nathalie Cole singing is Spanish. For big concert orchestras, there are so many good recordings on hand. Reference Recording, Chesky Records, offers many good selections as you do know. We use the same artists and the same recordings. There are so many on our hands, that my memory is tricking my mind. For electric guitar, I love the sound of Jim Hall, Pat Metheny, Lee Ritenour, Clapton, David Gilmore, again, there are so many choices...there are recordings that I do like: Double Bass Rarities - Berlin Classics, Barbara Sanderling playing the double bass. This recording is great for bass testing. Duests of cello and double bass is very difficult to get together. Works from Rossini, etc, are well recorded with outstanding performance. The size of the instruments must be understood perfectly in a well balanced system. For piano, I use Beegie Adair trio: Dancing in the Dark, tribute to Fred Astaire. There are so many good recording for piano performance, now I am listening to Valentina Lisitsa playing at the Royal Albert Hall. Wow, one of the best that I ever heard and a joy to listen. Do you want me to recommend to you only Spanish classical guitar players or any type of music?.