It isn't an odd idea at all to me. It doesn't matter what I do, from sewing, to crafting, to sculpting, metalsmithing and painting, I always add magick everything I make. You don't necessarily need to chant, I merely focus on the person it is for and the energy/goal I wish for it to have. I use symbolism and color correspondences to further empower the item.
You can chant or sing, but if it takes thought away from your work, don't do it. You should get "lost" in the music/words and your work and only be truly thinking about your goal. I always hum...I have a natural tendency to hum melodies I feel (nothing I've heard) when doing any task, especially art or crafting an object. The melody matches the purpose and I let the music come without thinking about it.