A symphony orchestra, also commonly referred to as a philharmonic orchestra or simply an orchestra, is a group of skilled musicians who come together to perform symphonic music. Alternately, the term may be replaced with "symphonic band," referring to a similar ensemble without the inclusion of stringed instruments.
Other synonyms for symphony orchestra include chamber orchestra, which typically features a smaller group of musicians and a more intimate sound, or a philharmonia, an ensemble typically associated with continental Europe. Additionally, the term "concert orchestra" may be used in reference to a group that regularly performs public concerts or as a catch-all term for any form of professional or semi-professional ensemble.