Possible Clues:

• Riveted to the TV, say
• Wholly engrossed with what Tupac did on record
• Like one who can't put a book down
• Informant keeping head of precinct spellbound
• Really into something
• Return mailer, for short
• Engaged and then some
• Performed a sort of pop music for listeners, enthralled
• Far from daydreaming
• Transported quietly into desert