assertively

adv

1. In an assertive manner.

   “Here it was the province of an electronic harpsichordlike timbre (presumably from a laptop) and an electric bass, played assertively by Zach Layton and supported by the drummer, David Justh. Mr. Justh added considerable filigree in the course of the 66-minute performance, none sanctioned by the score, but captivating enough to justify its berth.”