Of course! You can use:
An unlisted Youtube Link [important: don't hesitate to check that your video is embeddable - more details here]
A private Soundcloud Link [important: please use a shareable link with the code called 'token'. You can access it by clicking on 'share' under the SoundCloud player on the SoundCloud platform - more details here]
Do not forget to indicate the release date. That way, if the date is in the future, the influencer will be warned that your track is not released yet and so that it cannot be shared.
👉 If you are looking for a potential premiere, you can activate select the 'Exclusive' option while you add your track information before sending it to the influencers selected.
👉 If you wish to get advice on a pre-mix or demo, you can select the 'Demo' option while you add your track information so that influencers know that you consider that your work is not entirely finished.