The song Night Calls by Haerts is about the power of music and the connection it can create between people. The lyrics encourage the listener to embrace the music and never let it die, even when faced with difficult circumstances. The singer promises to run for the person they love and to always be there for them. The song also touches on the theme of missed opportunities and the regret that can come with not fully expressing oneself. The lyrics suggest that the person the singer loves had a song inside them that they never shared with the world, and the singer wishes they had been there to guide them. Overall, Night Calls is a passionate and uplifting ode to the transformative power of music.