Leong Wai Foong joined the advertising industry in 1994 and signed as an exclusive songwriter with a music publishing house in the same year, embarking on a dual career as both an advertising creative and a musician. In 2023, he founded NOTE DUET, a lifestyle brand that blends music with aromatherapy, adding "brand founder" to his list of roles.

As an advertising creative, Leong has crafted iconic campaigns for numerous brands, earning recognition through prestigious international awards including Cannes Lions, CLIO, One Show, WARC, LIA, AdFest and SPIKE. He was listed by Campaign magazine among ‘Asia’s Most Influential Creatives’ and honored as ‘Greater China Creative of the Year’.

As a musician, Leong has composed hit songs for Mandopop superstars such as Andy Lau, JJ Lin, Kit Chan, Victor Wong, A-Do, and Jason Zhang. His work has been celebrated across Asia’s music industry, winning accolades including Malaysia’s PWH Music Awards, Singapore Golden Melody Awards, Hong Kong’s JSG Top 10 Awards, China’s Top Billboard Music Awards, and the Asian Television Awards.

As a brand founder, drawing on decades of expertise in brand storytelling and music composition, Leong has integrated musical creativity into NOTE DUET’s campaigns and products. This innovative approach has generated rare, standout content in the fragrance industry, capturing immediate attention from both consumers and professionals upon the brand’s launch.