Chord Symbol help

[Wudluv2sweep]

Im learning a chord progression from "The Real Book" edition 5, anyway a couple of chord symbols i dont know what they mean:

B '7 (the ' is actually like a black blob)

C+7

sorry to seem stupid haha, but ive only just started learning chords

p.s. these chords are in song 18 (all the things you are) thanks in advance for help

[Zatz]

Hi Wudluv2sweep,

* The first one seems to be Bo7 (B diminished 7th) (b d f ab)
* C+7 may stand for Cmaj7 in some cases (C major 7th) (c e g b)

Zatz.

[Dommy]

Zatz, I'm going to have to argue with you about that. I believe that stands for C Augmented 7th, CTriangle7th is major seventh.

[Zatz]

Dommy,

well yea - that may be the case too... I agree with you.
I've seen maj7, ma7, M7, +7 suffixes for major 7th chords.

You must be right - '+' most commonly indicates augmented 5th. Context needed anyways to tell for sure...

Thanks for pointing this out,
Zatz.

[theox]

Yup, the C+7 in All The Things You Are is played behind the note Ab (which is the augmented fifth of the C Major scale, well, actually G#, but the song is in Ab so... :rolleyes: ). The chord could also be written as Cmaj7#5.

Wudluv2sweep: I guess you already know that C-7 would mean Cm7?

[Dommy]

I'm going to argue this one to the death. I have NEVER seen that notated like that. C+ is C Augmented, C+7 is C Augmented, which is C E G#, with an added FLAT SEVENTH.

I'll even take screenshots from the Realbook Version of ATTYA and the Colorado Cookbook version. And a clip from the New Real Book Chord chart.
I'm going to excessive lengths to get CORRECT information out there, I may feel like a bit of an *******, but I think its necessary. Yeah, I need webspace...

Considering this is The Real Book, I dont see any reason for changing the notation from CMaj7 to C+7 on a whim especially since CMaj7 was used to denote that previously. Maj7#5 was probably rarely used in cadential progressions back in the 30's and 40's, around when this tune was written. A Maj7#5 comes around from harmonizing either the melodic or harmonic minor scales, and considering the context of how it is being used(F#-7 B7 EMaj7 C+7 F-7), this can be analyzed as a ii V i in E, then a modulation back to F with a V7#5 and a Imin7. The Ab is shared between the EMaj7 and the C+7, so it makes for good voice leading.

[Wudluv2sweep]

yea its augmented, i mean it uses Xmaj7 for major 7s so i guess thats logical cheers for the help, interesting arguement above as well

[Chim_Chim]

B °7 <- could the 'black blob' have been a degree symbol?

if so then it's a dim7

or was 'the blob' possibly this -> ø ...if so then it's a half-diminished seventh which is a m7 chord with a b5 so it'd be m7b5