Add to Chris Thomas's exercises:
A siren - try imitating a police or ambulance siren, and feel that vibration in your frontal cranium.
Also, very light stacatto 1-3-5-8-3'-8-5-3-1 arpeggios. Think about keeping the sound very forward in the mouth, aimed at the front teeth and the nose, and just very, VERY lightly stroke each note - put NO weight on the notes - instead, try to keep that very pure "head tone" feel throughout the register, not just on the high notes. I've found this very useful not just for integrating my head register into my middle and chest, but also for lightening my approach overall when necessary. Think about a soap bubble bouncing along the surface of water flowing uphill and downhill - the water flow is what moves, but the soap bubble (your sung notes) remains equally light throughout the range. I've found the head tone notes are a "no brainer" when I do this exercise - there's no other way they CAN be produced.
KM === On Neil Shicoff - http://www.radix.net/~dalila/shicoff/shicoff.html On yours truly - http://www.radix.net/~dalila/index.html
+-------------------------------------------------------+ | For what is your life? It is even a vapour, that | | appeareth for a little time, and then vanisheth away. | | - James 4:14 | +-------------------------------------------------------+
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