The opera technique of presenting continuous music and singing punctuated by arias was pioneered in the seventeenth century by

The correct answer is Claudio Monteverdi.

Claudio Monteverdi was an Italian composer who lived in the time of the late Renaissance and early Baroque period. He was and is considered to the most important developer of what was then the new musical genre of Opera. He basically invented it.  

prosumerism is the correct answer.