Released in 2020, How Long is a powerful and emotionally charged duet between Dave and Australian singer Vanessa Amorosi. The track blends rock, soul, and gospel influences, with soaring vocals and a dramatic arrangement that builds to a cathartic climax. It was one of several collaborations between the two artists, showcasing their strong musical chemistry and shared affinity for bold, expressive songwriting. The single was released digitally and accompanied by a visually rich music video that reinforced its themes of endurance and emotional struggle.