Original: Drum and bass (also written as "drum'n' bass" and commonly abbreviated to D&B or DnB) is a type of electronic dance music which emerged in the mid 1990s.
Simplified: Drum and bass (also d & b, DnB, dnb, d' n 'b, drum n bass, drum & bass, dNb) is a form of electronic dance music. It began in 1990s in the United Kingdom.