Yo habré estado cantando
I will have been singing
Tú habrás estado cantando
You will have been singing
Él habrá estado cantando
He will have been singing
Ella habrá estado cantando
She will have been singing
Eso habrá estado cantando
It will have been singing
Nosotros habrémos estado cantando
We will have been singing
Ustedes habrán estado cantando
You will have been singing
Ellas/Ellos habrán estado cantando
They will have been singing