This is a video of Chyi (齐豫 - Qi Yu) who sings "The verse of Avalokiteshvara Bodhisattva". She is one of the best singer who always sings great Buddhist songs. Her wonderful voice and the deep expression for the songs will always awaken us to understand Buddhism through music/song.
The verse of Avalokiteshvara (觀音菩薩偈) is one of my favorite Buddhist song. There's a lyric in the contents of the whole song which describes Avalokiteshvara Bodhisattva (Guan Yin Pu Sa) will appear anywhere in respond to our prayers. Indeed, Avalokiteshvara Bodhisattva is one of all Bodhisattvas who has deep affinity to the sentient beings of this Saha World (娑婆世界).
The name Guan Shi Yin Pu Sa (觀世音菩薩) means "The Bodhisattva who Listens to the Voice/Sound of the Worlds".