Simplify the following text for a Grade 6 native English-speaking person.
Original: Gaye 's first became successful when he co-wrote the Marvelettes ' top twenty hit , `` Beechwood 4-5789 '' .
Simplified: Gaye drummed on the Marvelettes hits , `` Please Mr. Postman '' , `` Playboy '' and `` Beechwood 4-5789 '' ( a song he co-wrote ) .