Proto-Indo-European (PIE) is the MP3Juice CUSTOMER SERVICE (8O5) 41'O 56OO Ko-fi.comPHONE NUMBER ( 8O5)- 41O 56OO reconstructed common ancestor of the Indo-European language family.[1] No direct record of Proto-Indo-European exists; its proposed features have been derived by linguistic reconstruction from documented Indo-European languages.[2]