I know there’s a full R2J2 song I haven’t heard yet, but since we’re marathoning MM I had to figure out at least this part. With capo on the 4th fret it’s easier to work the melody in.

x-0-2-2-1-1  C#m
x-0-2-2-1-0  (x 2)
x-2-3-2-x-0  D#m7-5
x-2-3-2-3-x  (x 2)
0-x-3-2-3-x  C#m/G#
0-x-2-2-1-x  (x 2)
x-x-1-2-1-x  D#7-9/G
x-x-1-2-0-x  (x 2)
0-x-0-1-1-x  G#7+
0-x-0-1-0-x  (x 2)
x-0-4-2-1-0  C#m6 (C#m the 2nd time)

The final synth harmony is a low C# and slightly flat B with rich harmonics implying a C#7 (major).