Echo Speaks is the approach people are using to do this.
https://community.smartthings.com/t/release-echo-speaks-v3-actions/173073?u=joshua_lyon
Unfortunately, SmartThings just announced that they will be shutting down the existing version as of September 8th.
The developer indicated that they’re going to try to get a ‘lite’ version working by September 8th, but it sounds like it won’t have the features needed for displaying album art.