extemporization

n.

即席作成，即兴之作，即席演说；

Cadenza and Extemporization
Practical Extemporization by Huskisson Stubington
A framework for ensemble soundscape extemporization
Organ improvisation: Edition, extemporization, expansion, and instant composition
Extemporization of J.S. Bach's Goldberg variations, BWV 988 : the varying of a reprise with improvised embellishments /
'The Mode of Extemporization': The Role of Informality in Reconstituting Formal Urban Spaces: The Case of Nakuru, Kenya
Notated extemporization the structural ramifications of improvisatory composing in part VIII of Frederic Rzewski's The road /
Universitat de Barcelona - Musical and body extemporization analysed from a neuroscientific point of view
Filling the gaps: Playing the semiotic network in the extemporization of scores for improvisational theater
'The Mode of Extemporization': The Role of Informality in Reconstituting Formal Urban Spaces: The Case of Nakuru, Kenya ('Improvisat...