"Whiskey in the Jar" is a traditional Irish folk song that tells the story of a highwayman who is betrayed by his lover. The song captures themes of love, betrayal, and the struggles of a rogue life. It has been popularized by various artists, including The Dubliners and Thin Lizzy. The song's catchy melody and narrative style have made it a favorite in pubs and gatherings. It often features lively instrumentation, typically including guitar, fiddle, and accordion, contributing to its enduring appeal in Irish music culture.