Lina Yamin and six other musicians found themselves breathing heavily as they held back tears while performing Monday for a special crowd. The 33-year-old from Venezuela said the musicians, most of whom come from other countries themselves, tried to keep it together as they played a concert for a room of recently arrived migrants. “When you’re away from home playing music, it makes you miss a lot of things. It makes you remember a lot of things,” she said. The concert was held in the auditorium of a migrant shelter at the American Islamic College on Memorial Day. The music was comforting to ma…