When John Henry Giles collapses in the recording studio, his Trilby hat is briefly seen rolling on the ground as his trumpet drops to his side; however, in the next shot, as his assistant goes to his aid, his hat is still on his head.
After the MRI shows John Henry has a blood clot in his brain Chase says there is a good chance they can bust the clot with TPA, a potent blood thinner, yet Foreman tells John Henry that they are starting him on heparin, which while being a weaker blood thinner, is an entirely different drug.