Simplify the following text for a Grade 7 native English-speaking person.
Original: Columbia decided that the two would be called simply `` Simon & Garfunkel , '' a replacement for the group 's previous name `` Tom and Jerry . '' Simon claimed in 2003 that this renaming as `` Simon & Garfunkel '' was the first time that artists ' ethnic names had been used in pop music .
Simplified: This was also performed with Garfunkel under the name `` Simon and Garfunkel .