 Nyorai kupfuurira kweiyi ndima - Muna 2011, Petrie akafamba nomuseki Josie Long. Album yechina Mark My Words yakatevera, kusanganisira rwiyo Emily Davison Blues chirevo pamusoro pekutaura kwevhidhiyo kumhirizhonga ya2011. Firimu rinokosha rakatungamirirwa naChris Shepherd rwiyo Rise kubva mubhuku rimwe chete rakaratidzwa paChannel 4 sechikamu cheTV series Random Acts. Muna 2012, Petrie akatora chikamu mu Anti-Capitalist Roadshow pamwe naRoy Bailey, Robb Johnson, Leon Rosselson, Peggy Seeger nevamwe. Iye akaitawo gigs nevamwe vezvematongerwo enyika vanhu vemifananidzo vakaita saChris T-T, David Rovics naDick Gaughan, pamwe nezvematongerwo enyika indie punk rock mabhendi senge Thee Faction uye Colour Me Chitatu. 