what is the name of this slim whitman song?

When I last heard this it was identified as by slim whitman, and it has a 'yodel' lilt so I think it is his:

So many times i've lost
so many times i've traveled up on a hill
with dust on my shoes
somewhere behind the rainbow
somewhere beyond tomorrow
what will i see?
what will it be?
when comes the day i'll stop searching?
when comes the day i'll be free?
when will my star start to rising?
maybe it never will be!

Any help in identifying this greatfully appreciated.--Fred

Yes, Slim Whitman has sung the song. It's called "When". I found a video with a cover by George Baker, where Slim Whitman is mentioned as original artist:
http://www.youtube.com/watch?v=OJLEUOLc0B0
Edit: Now i found the original too http://www.gotmp3.com/download/tHWOK...tman_When.html

For some reason I just couldn't find it, thanks!