This is a piece of music specially produced for commercial use. It is suitable for live music in stores, stores, supermarkets, department stores, corporate halls, commercial activities, visual effects and advertising, YouTube videos, corporate brands, news, and promotional media. Cozy Swing Jazz Trio Style, Tuba lead and solo. 這是一首特別製作給商業用途的音樂，適用於店家、賣場、超市、百貨公司、企業大廳的現場音樂、商業活動、視覺效果和廣告、YouTube視頻、企業品牌、新聞、宣傳媒體。Cozy Swing Jazz Trio 風格，大號主奏及間奏。