Should you be a first-timer for submitting a song to a music promo channel, then it is advisable to approach the smaller channels first. These music promotion channels are usually managed by one or two individuals. They are inundated with submissions from hundreds if not thousands of people a day. You stand a better chance of getting accepted by a smaller channel. This will give you exposure and a way to build you promo channel reputation.
Here is a quick tip for submitting. Never send attachments in emails, rather send a SoundCloud link or URL. Make your email personal and friendly. Also, send links to your website, Bio and any other information the promoters will need to give you exposure.
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