What is the insturment used in this song?

[Mel]

https://www.youtube.com/watch?v=Gp3p-67nHGQ

And is it the same as the one in this..?

https://www.youtube.com/watch?v=wcMnWfFy3VM

[Lamkin]

I want to say it's a clarinet (for both), but what the hell do I know?

[Lamkin]

Also, though it's possible we'll eventually see an answer in the thread from the composer, you could always try contacting him directly to ask:
http://bandcamp.com/contact?b=2122756507&n=Floex&p=http%3A%2F%2Fstore.floex.cz%2Falbum%2Fsamorost-3-soundtrack

[Kuba Amanita]

yes, it's clarinet played by Floex.