Visit these other good sources for sheet music!
Beautiful arrangements for strings, mixed chamber ensembles, and orchestra. Includes classical (sold individually or in collections), pops, and Broadway. On-line ordering.
Latham Music is an excellent source of classical chamber music arrangements. Has everything from solos and duos to string quartet and even 4 part cello ensemble.
Sheet Music Plus has just about
any genre and instrumentation.
Powerful on-site search engine and very easy to navigate.
Last Resort is a good source for wedding "standards" for solo, duo, trio, or quartet. Parts are scored to be interchangable with different instruments. They also carry a collection of Waltz and Ragtime pieces.
Shar is a traditional source of supplies and sheet music for stringed instruments and ensembles. They just recently added a line of piano music.
String quartet that Carla Boardman Padron plays in.