Recording a track with SoundPrism is very straightforward.
To record a track you need to first tap the the home button (the button with the house symbol on it). On the iPad you can find the home button on the lower left area of your screen.
Then choose 'Record' in the main menu.
Recording starts immediately. The home button is replaced by a pulsing recording button.
Press the pulsing circle button again to stop and email the recording.
Your track will be compressed so it can be sent via email.