Released in 2000, "GSM" by Bulgarian pop-folk artist Milko Kalaidzhiev is a quintessential chalga track that humorously celebrates the early-2000s excitement of owning a mobile phone to stay connected with a loved one. The song has experienced a resurgence in popularity, becoming a viral meme and a staple of nostalgic Balkan internet culture. Listen to the track and view the lyrics on YouTube.