I believe Rachmaninoff dedicated a concerto to medtner and medtner one to rachmaninoff.
medtner was very heavily influenced by rachmaninoff (and vice versa), so maybe medtner was inspired by these two concertos and decided to write one similar to them.if you havent heard medtner's piano concertos, please do check them out. all 3 are very exciting, have plenty of virtuosity, and are very musical.
do you have any personal recommendations in terms of performers for the medtner concertos?