Tris imboden has drummed for Stevie Wonder and Julio

lglesias however, most know him as the drummer in the

band Chicago.

What is wrong with the sentence?

When you use However as a connector, you need to separate the information into two sentences, this doesn't mean that they're not part of the same idea, if you do it like it is written in here you have a punctuation mistake, the sentence should go like this " Tris Imboden has drummed for StevieWonder and Julio Iglesias. However, most know him as the drummer in the band Chicago".

Capitalize the "I" Imboden