Dominant seventh used on notes other than the dominant, such as the subdominant???

[Nasty Nate]

One may always play a dominant seventh, anywhere in any key.
sources: jazz music

[sammyp]

Thanks for the reply Brainbridge! by sunday my passion for music theory had wained a bit LOL ....didn't mean to skip out!

I can appreciate your eliteness ....i was very much that way at one time but many many cover bands and country rock gigs have mellowed me over the years!

[hgiles]

Be careful in your use of he term 'Dominant 7th.'. The term is used to refer to a chord type, not a pitch class. If you are referring to a pitch class then the term 'minor 7th' is appropriate.

Pet peeve of mine, that I will continue to get flak for I am sure.

[hgiles]

When in doubt use the diatonic 7th degree. In major mode music all diatonic chords except I and IV will have a minor 7th.