Most Beatles songs credited to Lennon/McCartney weren't written collaboratively; they were usually written by one or the other. Arule of thumb to bell who wrote what is to listen to who sang lead vocals. Of these Beatles songs on which John or Paul sang lead, choose the eleven (11) with lead vocals by John Lennon.

1. Across the Universe
2. Can't Buy Me Love
3. Fixing a Hole
4. For No One
5.Got to Get You Into My Life
6. I've Just Seen a Face
7. Maxwell's Silver Hammer
8. And Your Bird Can Sing
9. Paperback Writer
10.PS I love You
11.Things We Said Today
12.You Won't See Me
13.Dear Prudence
14.Help
15.If I Fell
16.I'm Only Sleeping
17.No Reply
18.Please Please Me
19.Rain
20.Sexy Sadie
21.She Said She Said