I appreciate the detailed response and feedback!Is there a reason you need to learn this particular tune? Alone together is a great tune, and this is a great arrangement. However, as someone who teaches this stuff in a regular basis, I would encourage you to start with something else, for several reasons:
Alone together is actually a pretty tricky tune, and has some fairly sophisticated harmonic turns.
Arrangements like this will often have harmonic and melodic embellishments that most jazz musicians don't play when they play the tune. I can hear right off that this arrangement has several of both. while learning those embellishments isn't bad per se, you won't be learning the "real" melody or chords (in quotes because the changes and melodies jazz players use are often not the originals anyway: you have to know the "correct wrong changes")
The bass is not super easy to hear on these old recordings, and this one is no exception. It certainly is audible, but if you are new to this kind of transcription, this is a hard one to start with.
I would start with a tune like Cantaloupe Island or Watermelon Man, the changes and melody will be easier to figure out. If you really want to learn Alone Toogether, I would find a more recently recorded version, and possibly look for one with a singer, as singers tend to stick closer to the original melody, and players tend to use more "standard" harmonies when accompanying a singer. remember though SINGERS WILL OFTEN DO SONGS IN NOM STANDARD KEYS, so you will likely have to transpose the song once you get it down. I will often use Chet Baker recordings as my place to start learning a tune, since tune interpretations ore usually pretty straight ahead.
Alone Together doesn’t have to be the first tune I tackle, but it is one I tasked myself with learning first and I’ve been listening to it for like an hour or two everyday for the last several days/week, so I figure I might as well keep trucking with it.
There is a Chet Baker version (which I’ve heard is a good one to learn for this song), as well a few other newer versions I like a lot, with the bonus that the bass is a lot more audible.
This version just seemed like the most basic version (to my untrained ear anyway) so I started with it, but I’ll start looking at the Chet Baker and other versions too.
If I’m still lost in a few days, I’ll just switch to another tune completely, and come back to this after a few. Thanks again!