Violinist, composer, improviser, bandleader, and (yes) singer Jenny Scheinman has been a major force on the Brooklyn creative jazz scene since her arrival in the borough from the West Coast in 1999. She has made weekly appearances at the Barbès club in the Park Slope neighborhood when not on tour or involved in other competing projects, using her residency there as a laboratory for trying out a variety of musical approaches and configurations, exploring styles from avant jazz to country-folk singer/songwriter fare.