The answer is:**NO** while the (V7) is almost always used: in jazz (IIm7 - V7) the proper V is rarely found (as in folk tunes in a choir setting or in church choral settings *) I just went through some Bach-preludes and didn't find a proper V. They V will appear in a SATB voicing like: Oh du fröhliche Weihnachtszeit [![enter image description here][1]][1] [1]: https://i.sstatic.net/Hk27G.jpg