1) Concertato 1) Symphonic work with solos 
• (n.) A concert for two or more principal instruments, with orchestral accompaniment. Also adjectively; as, concertante parts.
Con`cer·tan'te noun [ Italian , orig present participle of concertare to form or perform a concert. See Concert .] (Mus.) A concert for two or more principal instruments, with orchestral accompaniment. Also adjectively; as, concertante parts. 
A concertante is a musical concert for two or more principal instruments, with orchestral accompaniment.
(1) a term used to modify another form or genre, suggesting that all parts should be regarded as equal in status (18th century) or indicating a virtuoso first violin part (19th century); (2) a work with solo parts in the nature of, but not the form of, a concerto.