Say I'm writing a message (on twitter) to an author of a book you read, or a message to an artist about live you went to or album you listened to.
I want to talk/ask about something else, but I want to start of with that I enjoyed the work.
The English equivalent would be "I thought it was very interesting/I enjoyed it very much/It was a wonderful performance/etc"
I looked up "to enjoy" in an English-Japanese dic and all I got was 楽しむ and it doesn't seem quite right in this situation. 楽しみにしています I know exists but is "I'm looking forward to it".
How can you say you enjoyed the book/performance/album? Any variants or example more specific statements would be welcome!