Hey, Jasim! Hope you are well. Sounds like a fun project you are working on.

Originally Posted by: jasim.hd

My question is when writing a solo: I find myself always referring back to pentatonic scale while writing solos, in other cases major or minor natural scales. Are there any other scales I should use?[/quote]

Major & minor diatonic & pentatonic cover most of what you need to use to play melodies & solos.

I've done a lot of tutorials on learning to improvise. The basic idea is to find the key, target chord tones of the chord progression & create a melody.

After you learn the basics, then the most important thing to do is to build a repertoire of licks & tricks that you can use to have a vocabulary of things to play.

[quote=jasim.hd]

Bonus question: do you have any tips for me on writing solos?

[p]Work through these tutorials.

https://www.guitartricks.com/tutorial.php?input=876

https://www.guitartricks.com/tutorial.php?input=483

https://www.guitartricks.com/tutorial.php?input=491

https://www.guitartricks.com/tutorial.php?input=2318

https://www.guitartricks.com/tutorial.php?input=2329

And read this blog post.

https://www.guitartricks.com/blog/how-to-play-a-guitar-solo

Hope this helps! Have fun!