Which American music artist who raps over synthesizer music describes his work as "based", a term which denotes a lifestyle of positivity and tolerance? 
Rain in England:  The lyrical style, which finds Lil B speaking on topics like family, love and death, has been noted for its sincerity and reflectiveness. Lil B:  He describes his work as "based", a term which denotes a lifestyle of positivity and tolerance.
Lil B