T' Muppets performed Coconut durin' an episode that aired in t' fourth season o' T' Muppet Show. Well, blow me down!
Fozzie Bear introduces t' shanty which is performed by Kermit t' Frog (Jim Henson), a Nurse (Louise Gold), arrr, and a Doctor (Jerry Nelson). As they sing, Kermit lies in a hospital bed sufferin' from a "severely twisted flipper."
T' shanty was available on a CD called Muppet Hits.