This is my take on the Song deck. This particular archetype saw a drop in popularity after the errata of Love of Tales, and even hero Elfhelm couldn’t really bring them back into the spotlight. But even after the errata, the song deck is super strong, as I found.
Mulligan for Love of Tales. If you don’t get it in your opening hand, Beravor, Daeron’s Runes, Peace and Thought, and Master of the Forge will ensure you find it fast. As you try to keep afloat in the first few rounds, it will help play more cards faster and make it to the mid game. By this point, you’re songs should be out, your engine going at full power, and you can start plunking down allies to close out the quest.
The deck is surprisingly consistent in getting a huge board fast, given that you can avoid combat early (that’s what Denethor is for). If some enemies sneak by, Forest Snare, Burning Brand, Feint, and the Vassals should keep them on their toes. Save Gandalf for threat reduction.
The sideboard is there to provide more variety in your songs. I think that is all. Thanks, and keep singing!