Hi there,
I'm Manos, an experienced sound designer and engineer.
Regarding the task, I can provide high quality audio through sophisticated editing, determine and pick up the best recordings (if there are multiple takes), adjust the fade ins/outs of the clips, remove noises and fix any recording problem or, overall, any other alteration that will optimize the quality of the song. At the end, I can process the mix through some analog effects for coherent and consistent sounding as well.