Bring sandwich to the beat

Phrase used in northern England by grime and trap artists/fans, meaning 'to spit tight bars over a backing track in a punchy way'. The phrase evolved because 'sandwiched' is a synonym for the word 'tight', which is used as a compliment in grime and rap circles when appraising a song or performance. Can also start with variant words 'bringing' and 'brings' depending on usage and context.