Well, you need to include your PHP script. Finding a good place to put your include can be a challenge.
It sounds like you are using a static page, perhaps pages.php would be a good place to place your include. Then in your php file, you need to assign the array or variable that you want to reference to smarty, the template engine.
Code:
$smarty->assign('guitarists', $guitarists);
Then you can reference it in you page, assuming that you have checked the box to "Parse Smarty tags in the content of embedded pages" in the pages section of the admin.
Then you can build a foreach loop to loop through your array.
Code:
{foreach from=$guitarists item=guitarist}
Name:{$guitarist.name} Birthday:{$guitarist.birthday}
{/foreach}