IWTL exactly what the tongue is supposed to be doing during a rolled R (spanish trill) : r IWantToLearn The best trilled [r] video yet! YouTube Tongue Stimulation Technology For OSA Airway and Sleep Group So, you know how to do a lip trill. But do you know how to do a TONGUE TRILL?? We get this question all the time!! Our EKM Vocal Health Specialist Gabi breaks Tongue Position and the War on Excessive Volume in Equipment Set Up Stork Custom Mouthpieces