What links Tutti Frutti with Shout Out to My Ex? The Saturday quiz

The questions

1 Whose Hours was the first major album to debut as digital download?
2 Which play did Janet Suzman controversially direct in Johannesburg in 1987?
3 Zener cards are used in tests for what ability?
4 Ogham script was used to write which language?
5 In official secrets, what is the NCND principle?
6 Which temperature scale is named after William Thomson?
7 What vast region separates the Sahara and the tropical savannas?
8 Which film told the story of SOE agent Violette Szabo?

What links:
9 1377; 1379; 1381; 1989 (Scotland); 1990 (England & Wales)?
10 St George’s, Bloomsbury; St Anne’s, Limehouse; St Alfege, Greenwich; St Mary Woolnoth?
11 Desire to hike; gate closing panic; harm joy; world pain?
12 Tutti Frutti; The Locomotion; Shout Out to My Ex; Introvert?
13 Aldridge; Carter; Grundy; Horrobin; Pargetter?
14 Cumberland; Darién; Sycamore; Watford?
15 Jessica Drew, Gwen Stacy and Mattie Franklin; Brenda Hale?

The answers

1 David Bowie (1999).
2 Othello.
3 Extra-sensory perception.
4 Irish (and Pictish).
5 Neither confirm nor deny.
6 Kelvin.
7 Sahel.
8 Carve Her Name with Pride.
9 Poll tax imposed.
10 London churches designed by Nicholas Hawksmoor.
11 Literal translation of German words: Wanderlust; Torschlusspanik; Schadenfreude; Weltschmerz.
12 Songs by Little artists: L Richard; L Eva; L Mix; L Simz.
13 Families in The Archers radio series.
14 Famous gaps: Virginia; Panama; Hadrian’s Wall; Northamptonshire.
15 Spider-Woman: in Marvel comics; Spider Woman (judge’s autobiography).