Another Tumblr prompt, this time from Nuri the line was "I think you missed your calling" and the pairing was these two. This is the folk song.

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It was altogether a different way to wake up, a second morning at Godric’s Hollow.

… I lately took my way,
All for to hear the small birds sing…

Spring sunshine fell through the gaps between the curtains and the window, reaching Johann’s bright blue eyes as they opened to observe the morning.

… I overheard a my own true love
Her voice it was so clear …

The sound of it had woken him, not altogether unhappily, for he had to wake in good time to reach London for work, a longer commute from the West Country. However, the sound of another person in the house, doing this at quite such an early hour was initially disorientating for a Tuesday.

… Long time I have been waiting for
The coming of my dear …

Johann pushed himself up off the bed and rubbed an eye with the heel of his hand, listening with more attention, the bedclothes falling away to his waist from his bare shoulders. There was a pause, the noise had stopped, and then more clearly through the half open bedroom door it came up the stairs.

… Sometimes I am uneasy,
And troubled in my mind…

It really was someone singing, and not a recording. As his mind came round more quickly, he grasped something to wear and slid from the bed, bare feet creeping across the floor as it continued, in English, occasionally pausing just to reconsider a word.

… But if I should go to my love
My love he will… say nay …

He stole to the top of the stairs, where it was louder still, accompanied by the sound of footsteps across a bare floor, and something brushing rhythmically.

… If I show to him my boldness…

It was’t until his feet carefully and quietly carried him down to the bottom, and he observed with his own eyes that he believed it was who he thought.

Ignan was at the other end of the rather empty living room, painting the end wall. Gerda was beside him, splattered in pale cream paint, also brandishing a brush. Her ears were pricked towards her master as he sang.

… If I show to him my boldness
He’d ne'er love me again.

The tierce de picardie on the final word indicated the end of the song, and the creak of the bottom step gave Johann away as Ignan drew breath again.

“Good morning.” The Professor greeted without turning away from the decorating.
“Morning!” Johann greeted with a grin, arms folded across his bare chest. “When you offered me to move in, I didn’t realise I’d wake up to this, Ignan. I think you missed your calling.”
“Decorating?” Ignan chuckled, sarcastically, lifting his wand to reach further up the wall above the elf, “You must still be dreaming, cousin…”