A plan or original idea, An abstract general conception; a notion; a universal, An understanding retained in the mind, from experience, reasoning and/or imagination; a generalization (generic, basic form), or abstraction (mental impression), of a particular set of instances or occurrences (specific, though different, recorded manifestations of the concept),
Music A performance given by one or more singers or instrumentalists or both, The harmonious combination of two or more voices or instruments, A public performance of music in which several singers or instrumentalists, or both, participate; especially, one in which the program consists of detached numbers_ also applied to the performance of an oratorio, but not of an opera,