Are you ready for some work??? Tounging is difficult for a variety of resons but mainly due to the asynchronous requirement of good tounging ( meaning the independance of tounge and fingers) '''''The tounge does not start a note it stops the note''''' and then releases the reed to produce the subsequent sound . Try this finger a low F 1- take a breath ready to blow a note 2-place your tounge on the reed preventing it from vibrating 3- build air pressure on the reed while keeping it from vibrating ( in fact closing the opening while developing air pressure), 4-After doing so wait a beat or two and then release the reed without any extra puff of air ( all the air pressure should be applied prior to releasing of the reed ) .This will emit sound the fingered F 5-While the note is emitted stop the sound with the tounge ( as fast as possible be quick here ) but keep blowing ( do not release the pressure you are getting ready for the next note) 6-As you are about to stop the note with the tounge switch your fingers to the next note G ( as fast as possible this should feel like lightning fast to the point that you will hear a slight G echo or pop ) . 7-After having switched finger position wait a beat or two and release the reed again to emiit sound ( the air pressure was kept remember) . 8-Stop the reed again while switching finger position again ( again super fast) 9- wait a beat or two and emit sound again 10- keep doing this all the way up the scale and down again working the fingers very quickly and in synch with the stopping of the note. Think of a row of bricks on a wall the bricks are the representation of the sound and the mortar in between is representative of the tounge work and the finger work . The tounge stops the sound and starts anew one by release not slapping . It is the air that starts a note!!!!!!! Enjoy