[Somebody]

Hello I have a problem in recording vocals- I'll have the artist sing some initial ideas at first, and we'll play the hook over and over till we get the entire song written- the problem is that when we go to record the over dubs, we want to keep the initial recording, because it usually sounds the freshest, and it has molded it's self into the song; but the over dubs, which may be several days later, have a whole different vibe and feel that they sound terrible next to the originals. How do you producer's blend old recording with new ones to make everything flow? Are there any engineering tips that would help this out? Any plug ins that may be recommendable to tinker with? Thank you.