open(INFO,"artist.id");

while ( <INFO> ) {
   $info .= eval "\"$_\"";
   # or
   #push(@info, eval "\"$_\"");
}

close(INFO);

print "info:\n$info";
#print "info:\n@info";
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Those escaped quotes are required if you want to maintain the actual format
of the file - newlines, spaces and such.

update:Of course, you can use qq as in ctweten's example to make it
look a bit cleaner

while ( <INFO> ) {  
   $info .= eval "qq($_)";
}
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