Historical clue formulations

• #1 hit for the Jackson 5 and Mariah Carey — 2018-12-15
• Words after "Reach Out" in a #1 Four Tops hit — 2017-04-03
• 1970 #1 Jackson 5 song — 2016-03-16
• 1970 #1 hit with the lyric "Just call my name" — 2016-03-05