MySQL - Selecting data from multiple tables all with same structure but different data

Ok, here is my dilemma I have a database set up with about 5 tables all with the exact same data structure. The data is separated in this manner for localization purposes and to split up a total of about 4.5 million records. A majority of the time only one table is needed and all is well. However, sometimes data is needed from 2 or more of the tables and it needs to be sorted by a user defined column. This is where I am having problems. data columns: ``` id, band_name, song_name, album_name, genre ``` MySQL statment: ``` SELECT * from us_music, de_music where `genre` = 'punk' ``` MySQL spits out this error: ``` #1052 - Column 'genre' in where clause is ambiguous ``` Obviously, I am doing this wrong. Anyone care to shed some light on this for me?