From a MicroSD Card

• 1). Eject the microSD card from your phone. Insert it into the microSD card adapter and insert the adapter into your computer's assigned slot.
  
  
• 2). Open "My Computer" and choose the microSD card drive from the list of options. Click the "Music" folder.
  
  
• 3). Highlight the files you want to erase. Right-click and choose "Delete." Confirm the delete by clicking "OK."
  
  

From Phone

• 1). Access "My Music" (or similar) on your phone's main menu.
  
  
• 2). Select the song you wish to delete.
  
  
• 3). Click "Options" and "Delete Song." Confirm the deletion. (The wording may vary depending on your phone model.)