Simplify the following text for a Grade 8 native English-speaking person.
Original: Its relative major is F-sharp major , and its parallel major is D-sharp major , usually replaced by E-flat major , since D-sharp major , which would contain nine sharps , is not normally used .
Simplified: Its relative major is F-sharp major , and its parallel major is D-sharp major . This is usually replaced by E-flat major , because D-sharp major , contains nine sharps and is not normally used .