music: 60's Chart Toppers: Name The Artist: Time Won't Let Me?

Questions

Nino Temp sang, and April Stevens talked on this 1964 hit.?

The Checkmates, Ltd. sang about this colour of pearl.?

"Sad Sweet Dreamer" & "Sincerely Yours": sung by 2 groups with this same name.?

Dick, Richard, Ella, Bobby, Frank, Lawrence, and Louis all sang this same song.?

Jack Wagner and the Temptations both sang a song with this title.?