Literature Reference: 楼高欲愁思，横笛未休吹。—— 《宴戎州杨使君东楼》 杜甫 The tall building stirs melancholy thoughts, as the horizontal flute plays without cease. Source from 'Banquet at the East Tower of Yang, the Governor of Rongzhou' by Du Fu.
横: Horizontal or vertical, it's all the same. Opposed to "longitudinal."
笛: The name of a wind instrument, often used in personal names to signify a person of many talents and versatility.
Meaning: The horizontal flute symbolizes musical and artistic expression, conveying a yearning for a beautiful life and the outpouring of emotions.