你們必唱歌，像守聖節的夜間一樣  

You shall have a song as in the night when a holy feast is kept

Singing Fill The Sky

Psalm 23
詩篇第二十三篇 

耶和華是我的牧者 

https://www.youtube.com/watch?v=HKA1IRPyRRQ   , try setting your  singing speed with YouTube "Playback Speed" setting to a higher value , e.g.  2.