Demonstrators wielding guitars , accordions , trombones and bagpipes , were responding to a Facebook campaign urging citizens to take their musical instruments on to the MTR system .
Unxtasirinakax guitarranak jat ’ int ’ asa , acordeones , trombones ukat gaitas ukanakampiw campaña Facebook ukar yanapt 'äna , ukampirus markachirinakarux uka jayllintañan yänakamp mistupxañapatakiw ch 'amanchapxäna .