Who sang the song "..Down in Jamacia they have lots of pretty women" 
the chorus goes like this.. "On and On On and On On and On" ..

Hello Heykr, 

The song is On and On by  Stephen Bishop.

Lyrics:

"Down in Jamaica
They got lots of pretty women
Steal your money
Then they break your heart
Lonesome Sue, she's in love with ol' Sam
Take him from the fire into the frying pan

On and on
She just keeps on trying
And she smiles when she feels like crying
On and on, on and on, on and on."

Here are the rest of the lyrics:
http://lyrictracker.com/show.php?id=NzA1MDQ=
http://users.cis.net/sammy/onandon.htm


This song is on the CD "On & On: The Hits of Stephen Bishop
It is available at Amazon.

Listen to a sample here:
http://www.amazon.com/gp/product/B000002OS2/qid=1146263357/sr=1-2/ref=sr_1_2/103-8989118-0440621?s=music&v=glance&n=5174

Search criteria:
"Down in Jamaica" " of pretty women"


I hope this helps!

Best regards, 
Bobbie7

---

Clarification of Answer by bobbie7-ga on 28 Apr 2006 16:23 PDT

My friend Pinkfreud-ga pointed out that in addition to the original
Stephen Bishop version, there is another version of "On and On" by
Kenny Rankin.
Amazon has a clip: 
http://www.amazon.com/gp/product/B000002I48