Depending on how large your wedding party is you may need 1 or 2 songs for this.
If you are having 2 ring boys/flower girls and up to 3/4 in your wedding party, you will need two songs so that everyone has time to make it to the top of the aisle without needing to run.
One Life - James Bay
Only Time - Enya
Simply The Best - Tina Turner (Piano Acoustic)
Is this love - Luke Burr
I Choose You - Ryan Darling
More included in the Civil Ceremony Guide