All The Things You Are is a popular jazz standard and was written by Jerome Kern.
Here’s the All the Things You Are lead sheet
Here are some resources (solo and transcription) for soloing over All the Things You Are. If you’re like me and struggle with figuring out what to play over chord changes, start by learning what others have done (duh!) 🙂
This link of Keith Jarrett exercises takes some of Keith Jarrett’s ideas and shows you how to expand upon them.
Learn some of the phrases and understand how they work. Then use them in your own solos.