I am looking for the book titles and author of a science fiction trilogy I once 
read.  I read the books as a teenager, but I do not know if they are classified 
as young adult or not.  I believe each of the three books shared a common word in 
the title (as in Red Mars, Green Mars, Blue Mars).  Here are the main plot points 
that I remember:

- At the beginning of the first book, something was released into the water 
supply which rendered immortal all children in the world under about age 13.  
Adults were unaffected.
- The children were collected into camps for their own protection and raised and 
educated there.
- The main character played the violin and had a musical brother who was just old 
enough to not be affected, so he grew old and eventually died after becoming a 
famous musician.
- There was a bad guy who became immortal as a newborn and had evil plans for 
taking over the world.
- In the second or third book, many of these immortals were sent off to colonize 
distant planets in a big spaceship community.

I have tried searching on various combinations of key plot terms, but I can't 
find an answer, and it's been driving me crazy!

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Request for Question Clarification by dscotton-ga on 18 Apr 2002 10:17 PDT

Do you know when these books were written?  If not, when did you read them?

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Clarification of Question by lisae-ga on 18 Apr 2002 11:28 PDT

Good question.  I checked the books out of a library sometime between 1990 and 1993.  Unfortunately I have no idea how old they were 
at the time.

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Request for Question Clarification by researcher-ga on 18 Apr 2002 20:33 PDT

Can you please look at the comments below and see if the list of trilogies 
helps "jog" your memory?

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Clarification of Question by lisae-ga on 18 Apr 2002 22:34 PDT

Sadly, no.

Hi, Lisa!

Variously called "The Earth Child Trilogy" and "The Earth Song Trilogy," (or 
even "The Earth Song Triad"), the books are called, in order, "Earth Child", 
"Earth Song", and "Ram Song," published in 1983, 1984, and 1985, 
respectively, by Sharon Webb.
They are out of print, but you can find them used at
http://www.abebooks.com

Other mentions of the books can be found at the following sites:

Medicine and Science Fiction
http://www.sff.net/people/asinclair/medscifi.html

The Locus Index to Science Fiction
http://www.locusmag.com/index/b502.html

Women Writers of Science Fiction and Their Books
http://www.wrevenge.com.au/bookshop/FEMINISF.HTM

Even searching for the titles of the books brought few hits and none which 
summarize the plot, which is clearly what made the search for these 
challenging. It turned out my spouse had fairly recently been searching for 
the third of this exact series, and knew immediately what the books were 
when I mentioned the question to him.

Hope that helps!

Hoorah, an answer!  This question has been driving me crazy!  I did suspect that it was unresearchable and would require someone already having 
knowledge of the series.  Thank you for this well-written, friendly answer.

any of these sound familiar?  Logan Trilogy perhaps?

01 - Agency Trilogy, The
02 - Changes: A Trilogy, The
03 - Cornish Trilogy, The
04 - Darkangel Trilogy, The
05 - Death Trilogy!
06 - Demu Trilogy, The
07 - Deptford Trilogy, The
08 - Draka Trilogy, The
09 - Forgotten Realms: The Dark Elf Trilogy
10 - Frost Trilogy
11 - Icewind Dale Trilogy
12 - Illuminatus Trilogy, The
13 - Johnny Maxwell Trilogy, The
14 - Logan Trilogy
15 - Merlin Trilogy
16 - Northworld Trilogy
17 - Omega Point Trilogy
18 - Ozark Trilogy, The
19 - Pit Dragon Trilogy, The
20 - Riverrun Trilogy, The
21 - Schrodinger's Cat Trilogy
22 - Shadow of the King : Being the Third Part of a Trilogy
23 - Spellkey Trilogy, The
24 - Starchild Trilogy, The
25 - Steampunk Trilogy, The
26 - Sunspacers Trilogy
27 - Timeliner Trilogy, The

At http://www.scifan.com/themes/mars/marsbiblio.asp you will find all the 
science fiction books written about Mars. My guess is that you are referring 
perhaps to the Red Mars, Green Mars and Blue Mars books written by Kim Stanley 
Robinson, also known as The Mars Trilogy.

masi27185-ga, while the titles match Robinson's, the plot doesn't.