Simply for Strings team favourite: An industry standard, Obligato strings offer a warm, luxurious tone across the spectrum of your instrument. Recommended for mellow instruments needing a boosting in volume and brilliance. Perfect for intermediate, advancing and professional players. This set contains: E-Goldsteel Loop End, A-Aluminium, D-Silver and G-Silver.Obligato strings have a core made from a modern synthetic multifilament fibre. The strings sound warm and full, yet have a brilliant, rich overtone spectrum and focused tone. Features: Obligato strings have a core made from a modern synthetic multifilament fibre. Obligato strings sound warm and full, yet have a brilliant, rich overtone spectrum and focused tone. Excellent playability and response throughout the entire dynamic range. All-rounder synthetic core string. Great tone volume. Excellent tuning stability. Absolutely insensitive to variations in temperature and humidity.