The Ochre Platform allows you to make digital tracks available for preview and / or purchaseable before the release date.
You will find the tracks on the Release Page, select the tracks you would like to edit and go to Edit Selected
By selecting either the Pre-order Previewable or Pre-order Previewable / Downloadable options, the selected tracks will be made available for preview or purchase before the release date.
You can have all tracks on an album previewing, but only 1 or 2 instant grat tracks, just select as you wish.
Preview lengths can be set per product and track if your campaign requires it. Otherwise they will default to your "Store Settings".
Making tracks available before release date shouldn't affect chart submission as long as your UPCs are registered with the relevant charts company and adhere to their track pre-order eligibility rules.
Hiding the tracklist completely but having formats on sale.