I made an interview to Dan Povenmire here is:
1- "How do you write the name of Doofenshmirtz's robot: Norm or NORM?"
I'm not sure I understand the question.
2- "Which is the name of the song that plays when Norm/NORM appears?"
You may be thinking of "Sunshine and Bubble Gum."
3- "Who performs this songs:
"Ballad of the Black Knight"; Swampy Marsh:
"Candace (both versions)" Danny Jacob;
"Forever Summer" Danny Jacob;
"My Chariot" Robby Wycoff;
"Pin Bowlin' Robby Wycoff;
"A-Prime Calypso"I forget, some session player;
"Shooting Star Milkshake Bar" Danny Jacob ;
"Come On, Kids!" Danny Jacob;
"Dr. Coconut" Danny Jacob;
"Ducky MoMo Theme" Danny Jacob;
"Elementary" Danny Jacob;
"Flawless Girl Danny Jacob ";
"Go, Candace, Go" Danny Jacob;
"Izzy's Got the Frizzies" Carmen Carter (I think); "
Let´s Take a Quiz" Danny Jacob;
"Half A Day" Kate Pearson (from the B-52s);
"Perry's Hat" Pretty sure that's Robby Wycoff;
"Perrytronic" Danny Jacob
and "Run, Candace, Run"? Danny Jacob
4- What kind of three is the three of P&F Backyard?
I'm assuming you mean, "tree." If so, it is a cartoon tree.
5- Is Monty Monogram going to appear more?
6- Now that Vanessa and Johnny broke...have you planed a new boyfriend for her?...I think that It will be cool an episode in which Carl, the intern, fells in love with her...tell me what do you think
I think Vanessa is out of Carl's league.
7- Who voices Phil, the Ryan-Seacrest like man?
I don't know who you're talking about. What episode is he in?
8- Are P&F going to come to Spain? which part?
No plans for a Spain trip right now in the show, though Swampy and I were just in Madrid last year for some press events.
9- - The Ryan-Seacrest like man I mentioned is this guy: "Phil (announcer)"
Safari can't find this address.
10- The Norm song wasn't that...I was talking about an instrumental jingle that is heard when Norm appears since his/it's first appearence (I don't know how to describe it)
I don't know the name, the composer probably has it titled but I have no idea.
11- Another question: What is Carl studying for? (I know he is an intern but...of which career/college)
We don't know yet.
12- Any character has second name (for example; Candace is Candace Gertrude Flynn?
They probably all have middle names but we haven't decided what they are yet.
13- Are we ever going to see Mrs. Monogram?
No immediate plans.
14- Does Irving have a surname? is he related with the Monogram family?
Not yet and definitely not.
15 In which year takes the series place? Ages of the characters?
It takes place in the present, even when it re-airs years from now.
16- Are we ever going to know Phineas's father/Ferb's mother?
Probably not. The show is not about them.
17- Which are the names of Doofenshmirtz's Parents?
Mr and Mrs Doofenshmirtz.
18- I don't know how to ask this but...here goes: Are Buford and Baljeet more than just "frenemies"....Do you have any future plans for this "couple"?
No they are just frenemies.