Mats Rondin RIIP: Deaths Comes in 6

Recently added to the Deaths in 2014 site under October 11 :

Mats Rondin, 54, Swedish cellist and composer, heart attack

Note from Rondin's wiki page:

Mats Rondin (21 September 1960-11 October 2014) 

What stands out is his birthday, given the following excerpt from my earlier post today re, "Deaths Comes in 5 RIIP":

Over the course of the last few days, four notable persons have died that have common ground:

• Pavel Landovský (September 11, 1936 – October 10, 2014) 
• Antonio Cafiero (12 September 1922 – 13 October 2014) 
• Ed Nimmervoll (21 September 1947 – 10 October 2014)
• Carmelo Simeone (September 22, 1934 – October 11, 2014) 

So as you can see, we have another to add to the list... giving us two recently deceased notable persons born on September 21st-- Ed Nimmervoll and Mats Rondin.  There's a cryptic phrase to be found in the surname "Rondin", butt I'll let you figure it out.