Josep Montero, the leader of the group Oques Grasses, will be in charge of choosing the songs for the Mercè Pyromusical, which this year will not be held in Montjuïc as in previous editions, but at Nova Icària beach. According to the Barcelona City Council, for the show that will take place on September 27th as the closing of the city's main festival, Montero has prepared "an eclectic playlist with a proposal open to various styles and sensibilities, and with a prominent presence of Catalan music". As usual, the songs will be revealed as they are played on the night of the Pyromusical.

More than a hundred free concerts make up the musical program of La Mercè 2026, which from September 23 to 27 will turn the squares and streets of Barcelona into urban stages for a great international festival, with musical projects from some thirty countries. Música Mercè, BAM, and Acció Cultura Viva are the three pillars that shelter a program in which, once again, the most popular names, mostly local, gather at the concerts on Avinguda Maria Cristina and those on Bogatell beach. On the first stage, among others, Maria Jaume, Els Catarres, Els Amics de les Arts, and the former singer of La Oreja de Van Gogh, Leire Martínez, will perform; on the Poblenou stage, among others, Al·lèrgiques al Pol·len, Buhos, Miki Núñez, Svetlana, and La Pegatina will perform, who according to Gisela Sais, curator of Mercè Música, will offer a concert with "a large part of the repertoire in Catalan". Two concerts for these stages are yet to be announced: a "surprise artist" on Avinguda de Maria Cristina and a "group to be announced" on Bogatell beach.