My thinking as far as exercises go is to separate them. Practice the inner smile as much as you can. This is a direct connection to expanding the heart energy. Then while practicing the healing sounds, keep this inner smile energy constant throughout the exercise. Eventually, this inner smile will grow bigger then the exercise and follow you wherever you go. And of course, the vibration from the sounds will resonate throughout your organs and expand on their own. Like riding a bike, once you get it you just enjoy the ride.
After practicing martial arts for many years, the inner smile had the most profound effect on everything and I continue to let it expand. With my beautiful wife and four kids, I could not imagine to be happier. Yet, it grows everyday and instead of having bad days, I have good days and better days and incredible days.