Lima, Jan. 16 -- A year ago, Venezuelan migrant Reymar Perdomo was singing for spare change on jammed buses, struggling to make ends meet while building a new life in Peru's capital.

But her life took a turn when she wrote a heartfelt reggae song about leaving her homeland that went viral on the internet and has brought tears to hundreds in the Venezuelan diaspora that has spread around the globe. Now Perdomo combines her street performances with appearances at concerts and on TV programs, and her song has become the unofficial anthem of Venezuelans who have fled their country's economic implosion.

"This song gives me goosebumps" said Junior Barrios, a Venezuelan migrant who listened to Perdomo perform her song "Me Fui" - Spanish for "I...