Hello!

[*Sabine*]

Yes, his mentor Denniz Pop gave that nickname to him.
Max is born Martin Karl Sandberg, which is quite a common name in Sweden. Then Max was part of a metal band in the 1990's named Its Alive, his name was Martin White then. But when he became part of Cheiron, Denniz made his name sound "poppier" without telling Max.
Here's the exact story: it's from the very good article one of our fellow members did about the Cheiron studios on Wikipedia.  

“… and in came a hard rocker”

Denniz was looking for heavier music and decided to sign the members of the Swedish glam-style metal band It's Alive a deal with the Cheiron for their second album Earthquake Visions. Denniz PoP helped the band to remix the songs, the band did not sell enough records to call it a success but its frontman and singer Martin White (Martin Sandberg) was encouraged to continue and write songs. He was asked by Denniz and Tom who needed his help and skills on other songs. Soon Martin spent more time with Denniz at Cheiron than with the band. Denniz, who always had an eye for talent, realized that here was a guy with the right musical skills that could compensate his own. He asked Martin to team up with him and was hired by Cheiron as a producer. Denniz even changed his name to the more “poppier” Max Martin. He forgot to tell him and when Martin discovered there was another name on the sleeve he asked Denniz; “Who’s that?”, Denniz responded “Oh, it’s you didn’t I tell you?”. Denniz became his mentor and after spending some time learning the basics the first production collaboration between Pop and Martin was the Rednex song Wish You Were Here.

full article here: http://en.wikipedia.org/wiki/Cheiron_Studios

[Alex Martin]

me too, i prefer not to talk about her!
yes the circle of the best friends: Bush, Sarkozy, Berlusconi... 

You forgot the 4th.....vladimir putin....

Hey you are 4 ......Why don't create the first politic boy/old boy band?

[secski]

Hey Ahmed, nice to meet you! Thanks, for that information!

Thanks Sabine for the wiki link. I remember reading that article now, a few years back i think... (fuzzy memory!)

haha alex, yeah, do you remember watching eurovision a few years back when russia had a boyband act called prime minister? lol.

[Alex Martin]

Hey Ahmed, nice to meet you! Thanks, for that information!

Thanks Sabine for the wiki link. I remember reading that article now, a few years back i think... (fuzzy memory!)

haha alex, yeah, do you remember watching eurovision a few years back when russia had a boyband act called prime minister? lol.

No,i don't remember this russian boy band but silvio george nicolas and vladimir for sure are better than "prime minister"

Hey secski it's funny to see that you in only a day wrote the same number of posts I wrote in a month

Good evening to everyone guys

[turnaround]

Hi secski.
Welcome to the forums!

How did you find us?
Great you like it here, I will read through the posts later

Enjoy it, and spread the word

[Rebecca]

Hi Rebecca. Nice to meetcha! Great site you have btw.

lucky number 100! yay!

Thanks Sescki.
Yes, how did you find us?

[secski]

haha alex, yeah, its called procrastination! i have 2 assignments due for uni by monday! but i love talking about music (esp swedish pop) so this site is perfect!

hi turnaround and rebecca! thanks for the welcome! I will ask some other people to drop by... I found this site through google. I wanted to see what other songs max was working on and the site popped up on the search engine, and to my pleasure there was a forum dedicated to him! awesome!

[*Sabine*]

Haha yeah, we're always looking for new songs! If you google all the new artists, you directly find us, cuz we're the first ones to discover them on myspace i guess!

[secski]

yeah i loooove that feeling when you discover someone for the FIRST time and you know they ROCK!

then you tell your friends hahaha

[ladyMusic]

Hi to all of you!
My real name is Oksana and I'm from Ukraine.I'm so glad that I found this site,because I like Cheiron sound so much and especially songs of Max Martin,he's wonderful!!!Unfortunately,Ukraine and other russian-language countries haven't any site like yours,so thank you for this one!
But I have one big problem,I speak english very bad! :(So I'm sorry beforehand for my english and for my mistakes that I'll have made!

[Tiiger]

Welcome to the boards, Oksana. 
Btw, there's nothing wrong with your English, I understand you perfectly. 

[*Sabine*]

Oksana, welcome here! We're glad to count one more fan to the community!
Your English is fine, I can't see any mistake!

[Rebecca]

Welcome Oksana! your English is fine!

[ladyMusic]

Thank you very much for welcome!!!