Minor question about major 7

Anders Hedelin · Post by **Anders Hedelin** » Mon May 16, 2022 12:48 pm

What is the most used label of this chord?:

: C what.JPG (9.13 KiB) Viewed 893 times

I've been informed that it could be written as Cmaj9, as an abbreviation of Cmaj7 and 9.

In a job I have, I've seen it labelled as Cmaj7add9, which doesn't seem quite right as the 'add9' understands a missing 7.

Any ideas?

Peter Thomsen · Post by **Peter Thomsen** » Mon May 16, 2022 1:36 pm

I have mostly seen C∆9:

ebiggs1 · Post by **ebiggs1** » Mon May 16, 2022 1:58 pm

I call it a Cmaj9. Root, a major third, a perfect fifth, a major seventh and a major ninth, Cmaj9.

michelp · Post by **michelp** » Mon May 16, 2022 4:21 pm

My personal preference goes to Peter's symbol, triangle with a 9. Clear, concise and widely used.

engelbach · Post by **engelbach** » Mon May 16, 2022 7:07 pm

It's optional.

∆9 (my preference)
Major9, major9
Maj9, maj9
M9

Definitely not maj7(add 9). That's unnecessarily long, and in the above examples 9 implies the 7.

Cheers,
Jer

Anders Hedelin · Post by **Anders Hedelin** » Mon May 16, 2022 7:27 pm

Thank you all! I think I know how to proceed.

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Minor question about major 7

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