The first line of the third verse of the Esperanto version by Briggs should read "Vojaĝanto dankas vin," (not "Vojaĉanto..."!). And Dicho, the reason your link to the Mozart variations page didn't work is you must put the "http://" part in the URL you are linking to, otherwise browsers will think the page they're looking for is right here on the Mudcat. Also, for some reason (or none), you put a slash between "&20" and "variantions" in the URL. It should work (provided I didn't misspell anything!) if you do it like this:
Oh well, nothing ventured.... Mozart Variations (the URL I used here being http://www.empire.k12.ca.us/capistrano/Mike/capmusic/form/theme%20and%20variations/Twinkle/twinkle.htm).