Complex sentence: "Radio" is different from the usual R&B material for which Knowles is known; It is an electro and dance-pop song that exhibits influences of 1980s synthpop, Petridis, Alexis.
Split into simpler sentences: Radio is different from the usual R&B material for which Knowles is known. It exhibits influences of 1980s synthpop, Petridis, Alexis.