easy to guess from the wordplay.
Solving time – 8m22s
ACROSS
1 SHOW-B(lue)OAT – The word length for this should have been (4,4) rather than (8). Both Wikipedia and imdb.com back me up that the title of the musical (and the three films based on it) is SHOW BOAT.
9 HEAT(h)-WAVE
10 WA(F)T – referring to Wat Tyler
11 HOLDING HANDS
13 MIG-NO-N – MIG refers to the Russian fighter plane, and MIGNON is a poem and character in a Goethe novel, Wilhelm Meister (I didn’t understand the ‘poem’ reference until seeing the comments.)
14 TON(ALIT)Y
15 S-LAVISH
16 S(CUT)AGE – guessed this from the wordplay
22 UNREEL – homophone of UNREAL
23 HOME STRAIGHT
26 ARCHNESS – (NHS care)*-S
27 ENGENDER – END in (green)*
DOWN
2 HEAD GIRL – HEAD – G(irl)I-R,L – Took me a while to see “direct ball” = HEAD, but once I got it, the rest was obvious
3 WITH ONE VOICE
6 JA(R-GO)N – I don’t have time to work out whether JAN is midwinter, so I’ll accept it
7 FA(W)N
8 NEW STYLE – N-(sweetly)* – relating to the Gregorian rather than Julian calendar
12 ALLITERATION
17 C-HUGGING – I work for a charity, so this came immediately
18 GREAT APE – (gear)*-TAPE
19 RELAPSE – (<=ESPAL(i)ER)
Had never heard of the 16A answer but wordplay was explicit enough to remove doubt. Along with the less than familiar definition at 17D, these were the last two to go in.
Good puzzle otherwise. I wonder if this is the first time CHUGGING has appeared in its new sense?
ANyway, almost sub-30′ again — ok, sub-40′.
“Universally known poem”? Made me smile.
Sabine
Simon
2. [Arising from prec. sense, in connexion with wag, knave, rogue, hence with fellow, face, look, reply, etc.] Clever, cunning, crafty, roguish, waggish. Now usually of women and children, and esp. of their facial expression: Slily saucy, pleasantly mischievous.
I like “slily saucy”.
–JR
Seven “easies” not in this blog:
20a Friendly hint (8)
INTIMATE. This took me ages to see – double defs are not my favourite.
25a I am a leader of Muslims (4)
I’M A M. & Lit.
4d General principles not in actor’s text (8)
OUT LINES
5d Not extravagant disagreement, in your case (7)
TH RIFT Y
15d The scalp, it may appear, is tough (8)
SKINHEAD. No bovver with that one?
21d Girl’s three articles (6)
AN THE A
24d Blind group that operate computers (4)
MICE