When Paul McCartney first completed the song he literally dreamed up, the rest of the band were at a loss for what to play on it. The somber tone and mournful lyrics didn't really lend themselves to an effective drum pattern, jangly guitars or even vocal harmonies. Martin convinced McCartney to grab an acoustic guitar and just sing the song by himself, a first in Beatles history. He also suggested another Beatle first: a string quartet. At first the notion conjured up thoughts of syrupy Mantovani schmaltz, and the young man resisted, but Martin assured him that it could be done tastefully. The part was the first of many elegant arrangements the producer would create for their songs.