https://www.orchestraltools.com/sinefactory

The demo on the link above sounds incredibly good for a freebie, will check this out tomorrow. There's also a free string ensemble, studio percussion and grand piano on Sinefactory.
They're actually recordings that pre-date Glory Days, from what I understand. In Rotary's description, it says that this library was 'curated' (I hate that word) from private recordings which Hendrik and Sasha made for a project they collaborated on.
Sorry I mean to reply to this! I find every library suits some things more than others. I have Swing, Swing More, CHH Vol 1, Broadway Big Band and Session Horns Pro, so I'm unlikely to reach for this first, but I do like the tone so it may come in handy here and there.