The Brussels Light Opera Company is an amateur musical theatre company that performs principally in English and has over 200 members from over 20 nations.

Each year BLOC puts on two shows, one in May-June and one in November. The spring show plays with a small band or orchestra to a 300 to 400-seater theatre and the November show performs with a full orchestra in a 650-seater theatre, each putting on 5 performances.   

BLOC welcomes all newcomers.  To perform in a show, it is obligatory to audition however formal musical training is not obligatory even though an ability to read music does help during auditions and rehearsals. Non-singing members are very welcome to help backstage, front of house or with administration.

Auditions serve as the basis for casting a show and aim to make the best use of the individuals who audition. Auditions are open to all BLOC members, and to non-members on the condition that they join BLOC as a member if successful. BLOC operates an open audition policy. All auditionees are allowed to be present and are informed about all audition dates. All auditions will take place in front of the entire audition committee.

For the Spring show, auditions take place in early January, and for the November show in May or June.

Rehearsals take place on Monday and Tuesday evenings, usually from 8 to 10 pm, adding in Sunday afternoons, usually from 2-6 pm as the show date approaches.

Any person who wishes may apply to become a member of BLOC.  All on-stage performers and all crew and anyone in the production team in any BLOC show must become Members of BLOC. On-stage performers pay an annual fee of 40 Euros (January to December); crew and production team pay an annual fee of 20 Euros.

Junior members (under age 16) do not pay a membership fee unless they turn 16 in the year in which the performance takes place.