"Tie-Tongue Mopsy/Tie-Tongue Baby" by Lord Kitchener? I know this is late, but in response to CapriUni's post, I also have (very mild) cerebral palsy which means that i find it difficult to perform some vocal exercises. I want to be a calypsonian, and whenever I remember that Lord Kitchener (Aldwyn Roberts), who also composed Harry Belafonte's hit "Jump In The Line (Shake Senora)" had a speech impediment, it reminds me that it is also possible for me to be a calypsonian.