His vocals would certainly be using treble clef. Most singer's vocals remain in treble cleff range (with the exception of very deep baritone singers).
The bass lines would be in bass clef because they are much lower notes (like the catchy part of Billie Jean, for just one example).
Treble
Sousaphone music can be transposed in both bass and treble clef
The piano is played using both the bass clef and treble clef. The right hand typically plays in the treble clef, while the left hand plays in the bass clef.
Bass and treble clef.
Clarinets play in treble clef.
The treble clef, which wraps around G on the staff.
what is a low bass and a hie bass
The piano uses both the Treble clef (for higher pitches) and the Bass clef (for lower pitches). It plays in the key of C. Sometimes it is misinterpreted that the Treble clef is for the rigth hand and the Bass clef if for the left hand. This isn't true. Both hands can use the Treble clef or Bass clef, or even the right hand can use the Bass clef and the left hand can use the Treble clef.
The treble clef is also known as the 'g' clef. The bass clef is also known as the 'f' clef.
The notes below the treble clef are typically referred to as the bass clef notes.
I believe you mean to say "Does a double bass read from bass or treble clef?" The answer to that is bassists almost always read bass clef. But very good bassists that play very high read treble clef often and sometimes tenor clef.
You mean just the clef for upright bass? It's bass clef.. heheh.