The easiest way (for me) to ID a track if you know some of the lyrics is googling it by using this form: "[the lyrics you heard]" trance lyrics
for example, if you heard you've lost somewhere then you google: "you've lost somewhere" trance lyrics
..with the quotation marks. Unless you've misheard at least a dozen of sites should come up and the ID should be in those sites, (in this case Chicane - Hiding All The Stars). Good luck.