Benjamin Britten put three well known hymns in his opera Noye's Fludde so that absolutely everyone could perform on the day, to generate a very special and powerful energy.
Why don't you learn the hymns by singing along to these videos?
If you find it difficult to read the words you can just 'la' the tunes ... have a go!

Lord Jesus, think on me, And purge away my sin
From earthborn passions set me free, And make me pure within

Lord Jesus, think on me, Nor let me go stray ;
Through darkness and perplexity Point thou the heavenly way.

Lord Jesus, think on me, When flows the tempest high :
When on doth rush the enemy O Saviour, be thounigh

Lord Jesus, think on me, That, when the flood is past
I may eternal brightness see, And share thy joy at last

Opening scene: Lord Jesus, think on me

Eternal Father strong to save, whose arm doth bind the restless wave,
Who bidds't the mighty ocean deep Its own appointed limits keep :
O hear us when we cry to thee For those in peril on the sea

O Saviour, whose almighty word, The winds and waves submissive heard,
Who walkedst on the foaming deep, And calm amidst its rage didst sleep
O hear us when we cry to thee For those in peril on the sea

O Sacred Spirit, who didst broop Upon the chaos dark and rude,
Who bad'st its angry tumult cease, And gavest light and life and peace
O hear us when we cry to thee For those in peril on the sea

Storm scene: Eternal Father

Soon as the evening shades prevail, The moon takes up the wondrous tale,
And nightly to the listening earth Repeats the story of her birth

Whilst all the stars that round her burn, And all the planets in their turn
Confirm the tidings as they roll, And spread the thruth from pole to pole

What though in solemn silence all Move round the dark terrestrial ball,
What though nor real voice nor sound Amid their radiant orbs be found

In reason's ear they all rejoice, And utter forth a glorious voice;
Forever singing as they shine, 'the hand that made us is Divine'


Final scene: Soon as the evening