I've been using Blender's video sequencer. I think it's great. You can find some pretty good tutorials on YouTube.

For writing music sheets, I use LilyPond.

I like it quite a lot, been using it for years. It think it gives the best looking output.

My favorites are:

• CoRecursive
• Security Now
• Breaking Math
• This Developer's Life

There are some that I haven't started yet:

• Software Engineering Daily
• The Changelog
• Signals and Threads
• On the Metal
• Soft Skills Engineering