Twin sisters Tegan and Sara began making music as teenagers, pairing their close harmonies with insightful lyrics and catchy melodies. Initially making music inspired by folk but with the edginess of punk, the duo went from low-budget demos to recording albums for Neil Young's Vapor Records. With each album they made, starting with 2000's This Business of Art, the sisters expanded their sound to include new wave and indie rock elements. 2004's So Jealous was the first album to feature '80s pop influences and sported their first definitive song "Walking with a Ghost." After a couple more albums that continued in the same vein, and as their position as outspoken defenders of women's and LGBTQ causes grew, they took a sharp left turn in the direction of modern pop.