Originally Posted by Noel96
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This progression is similar to an arrangement I've seen of the song "Feelings" that goes... Em EmM7 Em7 Em6 C.

The semitone descending harmonic movement of E-D#-D-C#-C that's present in this progression is often given to the bass and written as...

Em - Em/D# - Em/D - Em/C# - C
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--Noel

That also is the same type of progression that we used in Summertime, i.e. Am-AmMaj7-Am7-Am6 followed by Dm-DmMaj7-Dm7-Dm6 then E9-F9-E9. And like your scenario the bass added the various notes via a walk down while everyone else played the minor chord. It is a quite common chord progression.

Whenever I get something stuck in the back of my throat, I dislodge it by drinking a beer.
It's called the Heineken Maneuver.

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware