How do I recover my data on mybook essential

We only use our external hard drive for our Karaoke music we have over 673 files on it…Well we went to use it this past Saturday night and the external hard drive kept asking to format to F…With everyone messing with I think it got formatted…So I ran a recovery program to see if I was able to recover my data and the files are still there now how do I get them back…The software only checks to see if the data is still on the external hard drive…Please help we need these files in order to play our Karoaoke software…

Several applications you can use

Recuva, Minitool or TestDisk