You don' have to, but they're pretty useful if you do. I had to notate some drum parts recently (a first for me) and I was delighted to find that Sibelius Essentials modify their output correctly with the different note heads, etc.. For instance, a snare drum with a round head is played as a normal hit, but plays crossed sticks with a crossed head. Best wishes. Tim Burgess Raised Bar Ltd Phone: +44 (0)1827 719822 Don't forget to vote for improved access to music and music technology at http://www.raisedbar.net/petition.htm -----Original Message----- From: sib-access-bounce@xxxxxxxxxxxxx [mailto:sib-access-bounce@xxxxxxxxxxxxx] On Behalf Of Dimitrios Tsakiridis Sent: 03 March 2009 11:47 To: sib-access@xxxxxxxxxxxxx Subject: [sib-access] About Sibelius sound essentials Hello from Greece: I install the Sibelius 5.2, and I want to ask, if we must to install the Sibelius sounds essentials. Best regards, Dimitrios Tsakiridis. If you wish to unsubscribe, send a blank message with the single word, unsubscribe - in the Subject line to: sib-access-request@xxxxxxxxxxxxx If you wish to unsubscribe, send a blank message with the single word, unsubscribe - in the Subject line to: sib-access-request@xxxxxxxxxxxxx