Cryptic Clues

ACROSS

5 Have a school principal lead the way to the stream for a change 7 Born leaders cross to fight 8 Farewell top authors about to pass away 10 Alter aspirations for periods of time 12 They introduce one-movement orchestral pieces 14 Make fast an increase in wages to thumb a lift 20 Soundly composed a letter from memory 21 Specs ironically display a government agency 22 He’s only a male progeny 23 Bless nine individuals in early March for alacrity

DOWN

1 A broadcasting medium from an otherwise arid circle 2 Inspire with principles to claim Buenos Aires 3 Something valuable from grass, etc 4 Ban breadcrumbs 5 Constitution of a toast to a person 6 Stood up for a pink wine 9 Remove some of the Victorians 11 The frontrunner seeks out sweetened tea biscuits 13 Investigates those who pry 15 Press metal 16 Anything that enlivens a pick-me-up 17 Flowering plants in other bands 18 More chilly when finally juicier 19 Seeing into the German sea duck