Traditional music in Indonesia is an essential part of the cultural heritage passed down through generations, reflecting the diversity of over 300 ethnic groups and 1,340 tribes, along with a rich variety of musical instruments from the angklung to the Javanese gamelan. However, low public interest has led to initiatives like establishing the Indonesian Traditional Music Gallery in Badung, Bali, which aims to introduce traditional music to a broader audience, enhance appreciation, preserve endangered arts, and boost Balinese tourism. The gallery’s conceptual foundation employs data collection and analysis methods based on conservative and communicative principles, featuring a theme of sustainable architecture to craft environmentally friendly buildings using natural energy and materials. The design plan includes main, supporting, and auxiliary spaces with a total area of 8.250,29 m², on a site measuring 20.625,72 m², located on Jl. Uluwatu, Ungasan, South Kuta, Bali, on land approximately 20,650 m² with a steep slope, tropical climate, moderate noise levels, and a built-up area of 16,540 m². The design integrates considerations for the site, building, structure, and utilities, with strategic placement of entrances, outdoor spaces comprising softscape and hardscape, natural lighting, natural ventilation supplemented by air conditioning in certain zones, and a transportation system including stairs and pathways. The structural components consist of sub-structure, super-structure ,and upper-structure