Understanding 'Ethereal' in Context

Amidst the clamor of the vibrant city, a solitary musician named Leo played his violin in the park. His haunting melodies captivated passersby, evoking emotions ranging from sadness to nostalgia. For some, his music was a poignant reminder of memories long forgotten; for others, it was a source of solace in the hustle of urban life. Each note resonated deeply, a testament to the indomitable spirit of artistry that flourished even in the most chaotic environments. Yet, amidst the afternoon crowd, one word echoed in the whispers of the listeners—ethereal.

But what does the word 'ethereal' signify in this context? As the air shimmered with Leo's sound, it was evident that his music transcended the ordinary.