for Wotcha:
I know of only one German seasong with an English chorus: Here is it (copied from http://ingeb.org/Lieder/ickheffm.html; go there for a midi and for a translation into German (!) which is definitely necessary even for those of you with a good knowledge of German)

Hamborger Veermaster

1. Ick heff mol en Hamborger Veermaster sehn,
|: To my hooda! :|
De Masten so scheef as den Schipper sein Been,
To my hoo da hoo da ho!

|: Blow boys blow for Californio,
There is plenty of Gold
So I've been told
On the banks of Sacramento. :|

2. Dat Deck weur vun Isen,
Vull Schiet uns vull Schmeer.
"Rein Schipp" weur den K„pten
Sin gr”tstet Pl„seer.

3. Dat Logis weur vull Wanzen,
De Komb쳌s weur vull Dreck,
De Besch쳌ten, de leupen
Von s쳌lben all weg.

4. Dat Soltfleesch weur greun,
Un de Speck weur vull Moden.
K”m g„v dat bloá an
Wiehnachtsobend.

5. Un wulln wi mol seiln,
Ick segg dat jo nur,
Denn leup he dree vorut
Und veer wedder retur.

6. As dat Schipp weur so weur
Ok de Kaptein,
De L쳌d for dat Schipp weurn
Ok blot schlangheit.