The collective's first Performance Monthly meetings or Performance Monthlies (PMs), which since its inception advocates for the inclusion of all the participants in "accidental" and "fleeting" (from the French, "furtive") performances within the public spaces (or alternative spaces) on the basis of voluntary, free association and anonymity, took place from 2013 to 2014 in the City of Quebec. In 2014, a first "tas invisible" (invisible gathering) was held in Ottawa. Moreover, in 2014, a first geographically-dispersed tas invisible took place simultaneously in two cities – Quebec City (Quebec) and Grande Prairie (Alberta). As such, the collective opts for multi-site, simultaneous manifestations despite differences of time and space. In 2014, Le Tas Invisible travelled to Northern Ireland in order to participate in a festival at Belfast presented by the Bbeyond collective, which is internationally acclaimed for its contribution to innovate performance art.
