This is the 915th most frequent Finnish word.
soittaa
To play (an instrument) or to call (on the phone).
In this sentence, "soittaa" means to play a musical instrument, specifically the piano.
Hän soittaa pianoa iltaisin.
He/she plays the piano in the evenings.
Here, "soittaa" is used to mean calling someone on the phone.
Otan puhelimen, että voin soittaa hänelle.
I take the phone so I can call him/her.
In this usage, "soittaa" refers to ringing, as in pressing a doorbell.