lemongrove, your hymn is called, 'Hail, Queen of Heaven'.
Most of the music I listen to consists of hymns and worship songs and I am hard pressed to name a single favourite, but I have asked that the following are played at my funeral:
Your Faithfulness (Brian Doerksen)
I know not why God’s wondrous grace
I stand amazed in the presence of Jesus the Nazarene
For many years I have been taking a small group into a local care home once a month and we sing four traditional hymns with the residents. This particular home (not the one I'm Chaplain to) has a high number of residents with dementia and it never ceases to move me when I observe them singing along and remembering all the words. The effects of singing the hymns sometimes lingers for a while and they reminisce about their school days, or singing in the church choir. It's quite humbling.