Tennessee Code Title 7. Consolidated Governments and Local Governmental Functions and Entities § 7-39-309

(a) All bonds of the same issue shall, subject to the prior and superior rights of outstanding bonds, claims or obligation, have a prior and paramount lien on the revenue of the properties for which the bonds have been issued, over and ahead of all bonds of any issue payable from the revenue that may be subsequently issued, and over and ahead of any claims or obligations of any nature against the revenue subsequently arising or subsequently incurred; provided, that the proceedings authorizing any issue of bonds may provide for the issuance of additional bonds on a parity with the bonds.

(b) All bonds of the same issue shall be equally and ratably secured without priority by reason of number, date of bonds, of sale, or execution, or of delivery, by a lien on the revenue in accordance with this chapter and the resolution or resolutions authorizing the bonds.

(c) Any pledge of, or lien on, revenues and receipts of the corporation to secure the payment of any bonds, notes or obligations of the corporation issued pursuant to this chapter shall be valid and binding from the time the pledge or lien is created or granted and shall inure to the benefit of the holder or holders of such bonds or notes or the obligee under any such obligation until the payment or satisfaction in full of the pledge or lien. The priority of any pledge or lien with respect to competing pledges or liens shall be determined by the date such pledge or lien is created or granted. Neither the resolution, the indenture, nor any other instrument granting, creating or giving notice of the pledge or lien need be filed or recorded to preserve or protect the validity or priority of such pledge or lien.