'You Make Me Feel So Young' is a 1946 popular song composed by Josef Myrow (born in Tsarist, Russia), with lyrics written by Mack Gordon (born in Warsaw). It was introduced in the 1946 musical film Three Little Girls in Blue, where it was sung by the characters performed by Vera-Ellen and Charles Smith (with voices dubbed by Carol Stewart and Del Porter).
The song was recorded by Frank Sinatra in 1956 and performed frequently throughout his career. His version is featured in the 2003 movie Elf.
Many other artists, including Ella Fitzgerald, Helen Reddy, and Michael Bublé, have covered the song.

Solo opportunities.
There are small openings in bar 53-56 and 61-64 where a performer can improvise or play what is written in Part 1. The arrangement is quite fully written, so it can be well diluted by giving some instruments breaks.
March?
By lowering the tempo to 110, this can function as a swing march, provided you have someone who can do the bass line all the way.
Make great music!