Crossword puzzle clue "first and second for two"

First and second, for two

"Fancy" singer featured on "Problem" who in 2014 became the second ever to be simultaneously #1 and #2 with her first two hits: 2 wds.

"I Want to Hold Your Hand" and "She Loves You" group who in 1964 became the first ever to be simultaneously #1 and #2 with their first two hits: 2 wds.

First word across in the first-ever crossword (1913) and the first of a dozen appearances of the word in this puzzle's grid, written word search-style (left, right, down, and diagonally) ... Can you f

One two of two-and-two

Event in which two people have two hands and two feet on the ground

First name of the second first lady

"___, and first, second and third will be protected by a tarp"