1. With low volume
   "speak softly but carry a big stick"; "the radio was playing softly";
   - quietly
    
2. In a manner that is pleasing to the senses
   "she smiled softly"
    
3. With little weight or force
   "she kissed him softly on the forehead";
   - lightly, gently
    
4. Used as a direction in music; to be played relatively softly
   "The violinist played the passage softly, creating a delicate atmosphere";
   - piano

Encyclopedia: Softly, Softly: Taskforce