"George Martin, he's very good at a very sort of lush, sweet arrangement"

In this quote, Paul McCartney is praising the musical skills of George Martin. He explains Martin as being proficient in creating a "lush" and "sweet" arrangement. This recommends that Martin has a flair for creating music that is abundant and full, with an enjoyable and pleasing noise. McCartney's usage of the word "sort of" indicates that Martin's plans might not fit into one particular genre or design, however rather have a special and versatile quality. Overall, McCartney's words communicate a deep admiration for Martin's abilities as an artist and arranger.