In which voice is the subject first heard in Contrapunctus I, from The Art of Fugue?

a. the top voice, or sopranob. the second voice from the top, or altoc. the second voice from the bottom, or tenord. the bottom voice, or bass

b. the second voice from the top, or alto

Explanation:

Fugue, in general, is a polyphonic composition that introduces the subject of a melodic theme by a voice or a part, to then be taken and refined by others.

Bach's The Art of Fugue is considered to be a masterpiece of music, divided into seven groups. Contrapunctus I is one of the simple figures, and in it, four voices are introduced. First heard is the second-highest voice from the top also known as alto.