Help with Word Choice

Question

How would I say the following in Spanish?:

I hear the phone ring. We start to play this afternoon. (Is it hoy esta tarde or esta tarde)?

Answer 1

I think that I would say "Oigo sonar el teléfono" and " Empezamos a jugar esta tarde" or " Empezamos a jugar hoy por la tarde"

Answer 2

I believe it would be esta tarde

Answer 3

I hear the phone ring. We start to play this afternoon

Oigo el teléfono suena. Empecemos a jugar un deportivo/tocar un instumento músical esta tarde.