Transcript:

Their job is to keep passengers on the Sao Paulo underground safe.

But, once a month, instead of patrolling the platforms, nine security guards treat commuters to a concert.

They use the stations as venues and play an eclectic mix of samba, rock and opera.

The band is so successful that more members of staff want to take their place in the spotlight.

Vocabulary:

passengers n. 旅客，乘客（passenger的复数）

patrolling v. 巡逻（patrol的现在分词），侦查

commuters n. 通勤者；每日往返上班者（commuter的复数）

an eclectic mix （很宽的）范围

in the spotlight 处于公众注意的中心，出风头