Definitions of Square Dance Calls and Concepts
Switch To A(n) Diamond | Hourglass [A2]

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Switch To A(n) Diamond | Hourglass -- [A2]
(Ron Schneider and Sandy Knowles 1973)
 A2:

 Language:

Switch To A Diamond [A2] (Ron Schneider 1973):
From a Wave (or any Line of 4). EN: 10
Centers Run as Ends do your part Diamond Circulate. EN: 20
Ends in a Diamond. EN: 30

Switch To An Hourglass [A2] (Sandy Knowles 1975):
From Parallel Waves (or applicable Parallel Lines). EN: 40
Centers Run as Ends do your part Hourglass Circulate (Lead Ends 1/2 Circulate as Trailing Ends Veer Inward to end in a Mini-Wave with their opposite). EN: 50
Ends in an Hourglass. EN: 60

Switch To A Diamond:

 beforeSwitch To A Diamond afterCenters Run as Ends 'Diamond' Circulate (done)
Switch To An Hourglass:

 beforeSwitch To An Hourglass afterCenters Run as Ends 'Hourglass' Circulate (done)

Notes:
• At A2, Switch To A Diamond should only be called from a Wave; and Switch To An Hourglass should only be called from Parallel Waves. At C1 and above, these calls may be called from any legal starting formation. EN: 70
• On any Switch call, Centers do a Run (flip away from the Center of the formation). EN: 80
• Switch To A formation:
Centers Run as Ends do your part of a formation Circulate. Usually ends in the given formationEN: 90
• Some glossaries define Switch To A Diamond as Centers Run + New Centers Hinge. We believe it is better to think instead about the Ends doing a Diamond Circulate. This simplifies learning future calls since you can apply the same rule (i.e., a formation Circulate) to three calls (Switch To A Diamond, Switch To An Hourglass, Switch To An Interlocked Diamond). Would you rather memorize three traffic patterns or one rule that you can use for all three calls? EN: 100

Switch The Wave [A2] (Roger Chapman 1969):
From a Wave. Centers Run as Ends Cross Run. Ends in a Two-Faced Line. EN: 398

Switch To An Interlocked Diamond [C1] (Sandy Knowles 1976):
From Parallel Lines|Waves. Centers Run as Ends (do your part) Interlocked Diamond Circulate. Ends in Twin Diamonds. EN: 397

Switcheroo [C4] (Lee Kopman 1972):
From Parallel Waves (or applicable Parallel Lines). Switch To A Diamond; Centers Cast Off 3/4 as Ends Circulate. Parallel Waves end in Parallel Two-Faced Lines. EN: 405

Cross Roll To A(n) Diamond | Hourglass | Interlocked Diamond [C4]:
From Parallel Waves (or applicable Parallel Lines). Centers Cross Run as Ends do your part Diamond | Hourglass | Interlocked Diamond Circulate. A better name for this call might be Cross Switch To A(n) Diamond | Hourglass | Interlocked DiamondEN: 406

Cross To A(n) Diamond | Hourglass | Interlocked Diamond [C4]:
From Parallel Waves (or applicable Parallel Lines). Centers Crossover Circulate as Ends do your part Diamond | Hourglass | Interlocked Diamond Circulate. EN: 407

CALLERLAB definition for Switch to a Diamond
CALLERLAB definition for Switch to an Hourglass

Choreography for Switch To A(n) Diamond | Hourglass