Hi. There have been recent discussions to separate out song items into composition/audio/single/video (e.g. Q57903097/Q55064464/Q56070900/Q56070899). Unfortunately this means that using Harvest Templates now doesn't work for some of the items because the music infoboxes combine information for all of those things, and the sitelinks have been moved to the items for the composition. Perhaps there may be a way of filtering out items which are structured in the separated way.