I discovered there is also a Book 2 of "Essential Tunes". Looking at this list, I play and/or used to play about eight or ten of them. Some of the others seem worthwhile, but I think they are stretching the "essential" here. Many/most of these tunes are in "Scots Guards Book I" and while some might be essential for military duty, I think there are a lot more fun tunes to learn and play to expand your repertoire besides this list. Granted, it's all subjective and I don't pretend hold the keys to the master list! ith:

B83A Essential Tunes Volume 2 & CD
More music for the piper compiled by Dugald MacNeill.

The 25th (KOSB's) Farewell to Meerut, The Bens of Jura, King George V's Army, The 72nd's Farewell to Aberdeen, The Atholl and Breadalbane Gathering, Greenwood Side, Jenny's Bawbee, Johnny Cope, Black Bear Hornpipe, Campbell's Farewell to Redcastle, The Drunken Piper, Corn Rigs, MacKay's Farewell to the 74th, Corriechoillie's 43rd Welcome to the Northern Meeting, I'm No' Awa' Tae Bide Awa', Lord Byron, The Heroes of Vittoria, Colin's Cattle, Sir Colin Campbell's Farewell to Crimea, Far o'er Struy, The Battle of Waterloo, Jennie's Black E'e, Hot Punch, The Midlothian Pipe Band, The Cock o' the North, MacDonald's Away to War, Dovecote Park, Kenmure's On and Awa' Willie, The Campbell's are coming, Atholl Highlanders, Colonel Robertson of Toronto, The Cameron Men, The Garb of Old Gaul, The Borderers, Leaving Lismore, The Saffron Kilt, The Wandering Piper, Mairi Ban Og, My Lodging's on the Cold Ground, Lord Lovat's Lament, Bonnie hoose o' Airlie, The Flower of Scotland, Cutty's Wedding, McPhedran's Strathspey, Miss Ada Crawford, Monymusk, Stirling Castle, The Braes o' Mar, Because he was a bonny Lad, The Ale is Dear, The Mason's Apron, General Stewart of Garth, Sandy Duff, Granny Duncan, The Wind that Shakes the Barley, Cork Hill, Joe McGann's Fiddle.