Guitar instead of Piano

Hi all!

I was wondering, is there a possibility to have guitar instead of piano in hooktheory book?
On first page of hooktheory 1, all examples are using piano. Is hooktheory piano only?

Many thanks!

Hooktheory is not limited to the piano and in fact is very much geared towards people who play the guitar. Pretty much everything that we talk about applies to all instruments though - and when there is a difference we point it out. We do use piano sounds for a lot of the examples, but the examples are about listening to different chords in their simplified form to learn about how they function.