...I want you to not have to worry about a thing. This is your day and you shall enjoy it. That's why I will take care of getting in touch with the other musicians and handling the communication with everyone involved myself as well as coordinating rehearsals and the necessary music material.
On the day of your wedding ceremony I will be at the location early to handle the organizational matters regarding the musical performance before you arrive so that everything is ready for your big entrance. All that's left for you to do is to enjoy these moments with your loved ones.
In case you are getting married in a church there most likely will already be an organist to accompany your service. If you have special song requests that require a specific way of accompaniment (such as piano or guitar accompaniment or a string ensemble) I am happy to be on hand with advice.
All this we will discuss beforehand so that there will be no open questions left.