The song is called Amarillo by Tony Christie, I added the lyrics for you as well
Sha la la lala lalala
Sha la la lala lalala
Sha la la lala lalala
When the day is dawning
on a Texas Sunday morning
how I long to be there
with Marie who's waiting for me there
every lonely city
ha ha ha ha ha
where I hang my hat
ha ha ha ha ha
ain't as half as pretty as where my baby's at
Is this the way to Amarillo
every night I've been hugging my pillow
dreaming dreams of Amarillo
and sweet Marie who waits for me
show me the way to Amarillo
I've been weeping like a willow
crying over Amarillo
and sweet Marie who waits for me
Sha la la lala lalala
Sha la la lala lalala
Sha la la lala lalala
and Marie who waits for me
There's a church bell ringing
hear the song of joy that it's singing
for the sweet Maria and the guy who's coming to see her
just beyong the highway, there's an open plain
and it keeps me going through the wind and rain
Is this the way to Amarillo
every night I've been hugging my pillow
dreaming dreams of Amarillo
and sweet Marie who waits for me
show me the way to Amarillo
I've been weeping like a willow
crying over Amarillo
and sweet Marie who waits for me
Sha la la lala lalala
Sha la la lala lalala
Sha la la lala lalala
and lauren is the best
repeat *3 and fade out