1.   Visiting Sarajevo a fortnight ago, Osborne joined Smailovic for an impromptu performance in the devastated remains of the Skenderija Stadium.

2.   An impromptu performance convinced them to form a duo combining their diverse but complementary styles, creating a blend of Hawaiian music with American and European pop and folk.

3.   And when the first New York preview performance is interrupted by malfunctioning stage machinery, Burnett saves the day by delivering an impromptu performance before the wildly appreciative crowd.

4.   He grinned over his impromptu performance.

5.   He also knows about scripts and impromptu performance.

6.   His impromptu performance was, in every sense, a lovely touch.

7.   In past years B.B. King stopped by for an impromptu performance.

8.   Texas Ranger Joaquin Jackson recognized him in jail as the teen who put on impromptu singing performances on park benches at nearby Garner State Park.

9.   The scene is an impromptu performance by the Los Angeles Poverty Department, a theater company based on Skid Row.

10.   Club owner Dominic Santana, who was monitoring reports of a tornado in the area, said he was thrilled with the impromptu performance.