quick question, what mode/scale would be used over a 7#9 chord

[markjazzguitar1]

just jamming over a progression and wanted to add a little texture, but i didnt remember what scale works, for example if i am using Db7#9 what would work? altered scale/melodic minor scale id believe just unsure of where id place the root. if anybody could answer this for me id appreciate it

[gingerjazz]

you can think melodic minor up a half step if you want but it would be more correct to think Db altered both contain the same notes but i think this using relative scales can cause problems with regard to which tones you are gravitating towards.Hope this helps.

[fep]

diminished will work also...

Or is it's called by many in my neck of the woods, the diminished dominant scale.

[SteveM]

You could think of the Db7#9 as a G13 - so you could also use anything that would work over this i.e. D melodic minor.
Steve

[JohnW400]

Db minor pentatonic, Eminor Pentatonic or you could think its an E triad over a C# triad (Db) and see what that does for you or yu could just play around with the arpeggio: Db E F Ab Cb

[mr. beaumont]

good ol blues scale works nicely, if the chord sounds "bluesy" in context.

If it doesn't, my go to is a 13b5 arpeggio from the tritone sub--kinda like steve's idea.

I also like John's triadic idea--this is something i need to work on more.

[docbop]

or just take whatever scale you use for 7th's and sharp the 2nd/9th.

half-whole diminished
Altered (MelMi up a 1/2 step)
Minor Pent (up a b3)

Remember its a color tone so you don't have to play it you can just treat the chord like a straight 7th.