I got a question for you: "Reach Out I'll Be There" (also formatted as "Reach Out ( I'll Be There)" ) is a song recorded by the Four Tops from their fourth studio album Reach Out (1966). Written and produced by Motown's main production team, Holland -- Dozier -- Holland, the song is one of the best known Motown tunes of the 1960s, and is today considered The Tops' signature song.

Answer this question: who sings reach out i'll be there?
Let's think first:
To answer the above question, the relevant sentence is: "Reach Out I'll Be There" (also formatted as "Reach Out ( I'll Be There)" ) is a song recorded by the Four Tops from their fourth studio album Reach Out (1966).
Therefore, the answer is the Four Tops.