"So, you see the thumps from the base affect the way the potion brews. Each vibration from the music adds just enough constant agitation in the potion to enhance the strength, duration or shelf life!"

Ted Lupin was explaining his method proudly as his "Uncle Sev" looked dubiously at the cauldron. He was already getting a headache from the muffled whoom whoom of the large speakers. The music had been muted at his request, horrified to hear that Teddy preferred to brew at full volume. Teddy said the sound wasn't as important as the vibrations. They discussed which songs or tempos may be best for which potions. The current selection was a favorite of his mother's from the 90s, she had played it for him in the womb. (This was the chief reason Remus had not allowed Dora to select music of any kind while at Spinners End. He had become absolutely sick of the song and thought to spare their host fromntemptstion to murder.) The teenager led the older man up the stairs from his homes cellar.

Teddy enjoyed the older man's company, much to the chagrin of the majority of his relative's. He could never understand the tenseness that always entered a room when his godfather and uncle shared space, which was rare. Today had not strictly been a social call. He was angling for an internship at M&S's, the apothecary chain Draco Malfoy had pioneered. Snape had since retired from head of research, but still held a seat on the board. He knew what the boy was hinting at, Teddy thought himself incredibly charming and was the darling of his parents and most of their friends. He knew the boy had already been accepted to the program, but wasn't going to tell him. He had hoped his own daughter might apply, and while she received top mark's at Hogwarts in potions class, found the subject did not do anything for her or her complexion.

"Its messy work, Da. Things get under your nails, the humidity is bad for your hair, and the dungeons are always so dingy. It's simply too gothic."

(Snape loved the child unconditionally, but refused to fully believe she was his. They shared almost no defining characteristics, it was as if Narcissa had cloned herself. He couldn't even take credit for her marked intelligence because as ridiculous as Narcissa acted, she was much more brilliant than she let on. What they did have in common was making fun of Narcissa endlessly for her theatrics and a perfected eye roll they both gave nearly everything. Narcissa claimed she was the spitting image of her father in these moments, but Snape couldn't see it. The girl also had an innate understanding of all things muggle, despite her mother's best efforts.)

Teddy meanwhile thought Potions were brilliant. Maybe it was the months spent being exposed to potions fumes as a baby or maybe just a natural inclination. Snape suspected it had much more to do with ego. The boy took every opportunity to brag about how it was his blood and his Uncle Sev (Snape hated the name, but gave up by time the boy was five) that had produced the improved Wolfsbane. While the new formula could not cure werewolfism, it rendered the change painless and kept the human's mind. Snape suspected but agreed to not test his theory, that the potion also rendered new bites ineffectual in passing the curse.

The potion was the main reason why the Potions Master and now grown infant, who had once plagued his house, had such regular contact. The boy's blood was a key ingredient and required regular donations. The boy would march proudly into the lab monthly, his arm already proffered and his head held high. His father would be the one to accompany him and it was rather difficult for the men not to keep up with eachothers lives. Years later, Snape still refused to call Remus Lupin his friend and always protested when Teddy referred to him as "Uncle". He was still here in the Lupins home on a Sunday agreeing to have dinner. That didn't mean anything other than he was hungry and needed a break from Narcissa and his daughters incessant bickering.

They reached the kitchen where Severus greeted Tonks who offered him a drink, taking a hearty swig herself after a long day at the Aurors office. Remus was setting the table when Teddy asked Severus if he wanted to see the new morphing trick he could do. Both parents shouted "NO." before Severus could stop his bored "What?".

Teddy grinned madly (the strongest Black trait he had inherited) and proceeded to say "This." in a very innocent tone, except for a slight lilt and a higher pitch. Severus was about to say he didn't get it, searching the boy's face for any physical changes, when Minerva Mcgonagall's voice came out of the teenager and starting scolding him for elbows on the table. Both parents gave an almighty sigh.

"Knock it off, Ted." His mother warned, while Snape laughed when Teddy responded, "That is no way to talk to your elders Nymphadora."

There was murder in her eyes as she explained to Snape (over Teddys Minerva voice schtick, it involved a lot of ginger newt talk) how shed never even thought of morphing her vocal chords before. Having her Metamorph son around to compare notes with, her morphing had improved tenfold. Teddy was also able to benefit from his mother's experience and had surpassed her at the skill beyond where she had been at his age.

She too had been delighted, she explained to Snape, until it had gotten old. Having her old Transfiguration professors voice asking her if she'd seen his clean pants was disconcerting to say the least.

Severus inwardly agreed that would be disturbing but outwardly congratulated Teddy to the dismay of his parents.

Remus tried to come to his wifes rescue, "Its great, we are proud, but it's beyond annoying especially when-"

"Especially when he mimics you ." Teddy finished in his father's voice. Snape thought this was more upsetting than hearing Minerva's voice as the boy was an uncanny look alike for his father. Exceptions being the turquoise hair and lack of facial scars.

Remus finished placing their dinner on the table and pointedly ignored his son. He thought about asking Severus to lay off, but knew it was pointless. The relationship between the two men had indeed improved over the years, but Snape wasn't above a chance to wheedle the Marauder.

"I think it's excellent. If he wasn't busy this summer interning as M&S's (Teddy beamed) he should look into joining you at the Auror office." Now addressing Tonks, a smug smile on his face, "I could see the skill coming in handy for any number of undercover jobs."

"Yes, an excellent idea isn't it, mother?"

The smile slipped off Snape's face hearing his own deep voice coming out of the madly grinning boy.

Remus and Tonks shared a triumphant smirk across the table. "Teddy pass our guest the carrots please."

A baritone answered, "Of course, father."

"Stop that. Stop that right now or I'll tell the board to revoke the internship offer."

"Aunt Cissy won't let you.", Teddy had subtly morphed his nose a bit larger, he found it helped with the resonance.

"I'll let you bleed like a stuck pig next month's withdrawal."

"You won't." Teddy imitated his "Uncles" best glare back at him and passed the carrots to his mother.

That summer Snape came out of retirement to oversee the interns. Teddy finally understood all his godfathers less flattering stories about the ex Potions Professor. He refrained from doing imitations after that and started focusing on mimicking songs. Snape as Teddy started addressing him, didn't complain when he'd sing in a low voice at the lab. He found his favorite song had the right speed for making the galleons of Doxicide Snape had stuck him with just a little more potent.

You're the kind of person you meet at certain dismal, dull affairs

Center of a crowd, talking much too loud, running up and down the stairs

Well, it seems to me that you have seen too much in too few years

And though you've tried you just can't hide your eyes are edged with tears

You better stop, look around

Here it comes, here it comes, here it comes, here it comes

Here comes your nineteenth nervous breakdown

A/N: I had to fight with Narcissa not to name her kid Renesmee, because of course she would. So I left it ambiguous.