Is it possible to copy multiple tracks in piano roll view?

[yeto 41]

I have 2 separate tracks (piano and bass line). I want to copy portions of those tracks and paste. To save time, is it possible in piano roll view, to copy and paste the piano part and accompanying bass line at the same time to save time or do I have to copy the piano part and paste and then the bass line part and paste?

Thank you,
yeto