Mechanical licenses should be secured after recording and before distribution. Reputable manufacturers require proof of licensing before they will press your physical product. Reputable online services require proof of licensing to distribute your digital product.
If you want to get a jump on things, you can. Our system was specially designed with flexibility in mind. You can start your licensing at any time. Just let us know when additional information becomes available, such as the length of your recording of each song. Once we have all the required info, we complete the request and get you your licenses. Just make sure you understand our refund policy before you buy. We don't typically refund unless we can't license the song, which is rare.