I don't engineer a lot of jazz but I listen to quite a bit.

For the most part it sounds great, but there's a substantial excess in a certain part of the low frequencies. Because the rest is quite good I would tend to trust your aesthetics but blame the monitoring environment. I bet the room you're mixing in has a LF null where you sit, so you compensate by adding too much in that particular frequency. Without downloading the track and putting it in my DAW I can't get too specific, but it sounds like about 50Hz.

Okay, I captured a short piece of one song and put it in my DAW. The center of the range that seems to be too loud is 75Hz. I did a 1.3 octave wide 12dB cut at that frequency and things got better.

many thanks.
in these hours, listening carefully in other audio systems, I noticed the error, I believe due to a sum between double bass and kik, I will check.

What I heard had nothing to do with bass and kick happening at the same time.

For some tastes, it's a bit bass heavy, but the bass is quite well controlled I thought. Doesn't get farty. For me the reverb on the drums was a bit too much, but again, that's preference. The thing that dod get me was probably out of your control and was tuning on the piano - quite awkward in some places. I liked it. I am, of course a double bass player, so my view on how loud they should be in the mix is probably unreliable.

I just readjusted my subwoofer. It had been turned up a bit, probably by some housecleaning activity. With it back to normal I now hear only a small excess of bass, really only a matter of personal preference. The track sounds fine.

Link is not working for me - is it still valid?

The link works fine for me?