This is a great string if you have a cello that has a brighter sound than you wish and you are looking for an A string with a darker sound. I have had a Bianca cello for 17 years and have tried a variety of A strings. I have used, for the most part, Pirastro Aricore for the D, G and C strings because they produce a warm and dark, without sounding muddy, sound on a Bianca cello. If I were to rank the various A strings I have used, it would be as follows: 1. Larsen Il Cannone Warm & Broad 2. Larsen Soloist Edition 3. Pirastro Obligato 4. Pirastro Passione 5. Jarger 6. Pirastro Chromcor 7. DíAddirro Helicore Thus far I have used the Il Cannone Warm&Broad on the version of Jesu, Joy of Manís Desiring that appears in the Latham Wedding Album for Cellists, which was transposed from G up to A to save the Cellist from string changes during most of the running triplets. In this particular arrangement, you are playing primarily in the range from the open A up to the D that is above middle harmonic A. The string performs wonderfully. I have also played scattered movements from the first two of the Bach Suites as well as The Swan by Saint Saens, and been very pleased with the sound quality. It is clear without being dull, and it does not have the tinny sound that I heard on a lot of the other A strings that I used. I also played scales on it right up to the C above high A harmonic and the sound was solid and not brittle, as it can be on a less expensive cello. I also checked out the low harmonic E, in case anyone was wondering, and it was clear too. The string blends in wonderfully with the synthetic core Aricore strings, so I would expect it to do so with any gut/synthetic or steel core string with a warmer sound. While not cheap, it is well worth the extra money to have an A string that can help an inexpensive cello, and a so-so cellist, sound good. I would recommend this string very highly to anyone seeking a warmer sound, especially out of an A string, for their cello. It certainly lives up to its name of Warm & Broad.