The title's pretty straight forward and it's just something I got to thinking about recently. Let's see how many singers and/or musicians we can list that have the same name or almost the same name. I've thought of a couple so I imagine there's probably more than that. Also, if somebody you mention is a member of a band and not a solo singer please name the band and what instrument they play in it. So I'll start things off.

Phil Collins-lead singer and drummer for Genesis as well as a solo singer.
Phil Collen-guitarist and backing vocals for the band Def Leppard.

Roger Taylor. There's two of them and coincidentally they're both drummers for the respective band they're members of! One Roger Taylor is the drummer for Queen and the other Roger Taylor is the drummer in Duran Duran.

Ed.

Howard Jones --the former lead singer of metal band Killswitch Engage
Howard Jones --the 80's synthpop performer who sang the popular hit 'No One Is To Blame' and 'Life In One Day'.

Mick Jones --guitarist for The Clash
Mick Jones --guitarist for Foreigner.

Can it also be a band with the same name?
If so:
Anthrax (US metal band)
Anthrax (punk band from the United Kingdom)

Ronnie McDowell
Roddy McDowall (deceased)

God bless you and Ronnie always!!!

Holly

Engelbert Humperdinck - composer
Engelbert Humperdinck - singer

Alice N' Chains was an American glam metal band.

Alice in Chains is an American rock band.

Aes Dana - Psybient one-man project from France.

Aes Dana - Black metal band from France.