Here is another mono recording that I like, this one is a repressing by Analogue Productions of an earlier Columbia pressing, Ellington's "Masterpieces".
Sounds good.
The digital versions, by the way, are (quasi) mono as well.
Here are Eddie Lambert's comments (from his book "Duke Ellington: A listener's Guide") on Mood Indigo - they are useful if you want to identify the various soloists:
"Masterpieces By Ellington opens with
Mood Indigo. This has as its centerpiece three vocal choruses by Yvonne Lanauze which are not particularly outstanding. They are the weakest part of the performance, but so perfectly set by Ellington that they provide an ideal nucleus to the structure. Prior to the vocal, we have a theme statement by one of those variants of the traditional
Mood Indigo trio voicing which Ellington liked to use: on this occasion, two muted trombones bones and bass clarinet make up the trio. From this time onwards, Russell Procope started to emerge as an Ellington clarinet soloist, and here he plays what used to be Barney Bigard's chorus, using a thick, broad tone and a blues-impregnated melodic style. He is beautifully backed by Ellington who is at his most brilliant as a keyboard accompanist throughout these performances. Procope goes on to play a low-register obbligato against the brass in the next section. This passage is scored for muted trumpets, and with Ellington's shifting harmonies some wonderful sounds are heard. The next two choruses are given over to Johnny Hodges, again with brilliant piano backing; this solo is a minor masterpiece in itself. The full band is used for the first time in the sixth chorus, which has superb lead trumpet from Baker and constantly moving and changing counterpoint among saxes, trumpets, and trombones, scored with breathtaking beauty and originality. In the reeds, the lead is changed about from clarinet to alto to tenor to baritone, with Carney's deep sound creating a magnificent basis for the multi structured writing. The greatest possible contrast is heard in the next chorus, given over to piano variations, calm in spirit with beautiful chording and balanced, inventive melodic structures. The band's newest soloist, Gonsalves, takes the bulk of the following chorus in a rich-toned, highly rhapsodic solo played against a brooding orchestral backdrop, drop, but Ellington himself has the last four bars to set up the vocal entry. The first vocal chorus is backed by piano and rhythm only, the second by powerful plungered brass, and the third by sultry, stilled saxophone harmonies. The contrast as Glenn's plunger-muted trombone takes over at the conclusion of Lanauze's vocal is dramatic. One chord from Ellington immediately changes the mood, and Glenn's two choruses, again with trenchant support from the pianist, are among his best on record. This trombone solo is followed by a long ensemble section in 3/4 time during which Nance's trumpet is briefly heard. Duke's piano then leads back to the recapitulation of the theme by two trombones and bass clarinet, but this time, improvised countermelodies by Procope and Ellington create a rich three-part counterpoint with the trio as lead voice. This is followed by a brief, incisive piano coda. This
Mood Indigo must be reckoned among the very finest of all Ellington arrangements."