This week's show features a radio first. I think. If you know different, please drop me a line ASAP so I don't embarrass myself (too much).

I invited Cardiff's Mathew Mayes, aka Channel Swimmer, to sample elements from the last two broadcasts and to re-edit/mix/weave them into a session for this week's programme. Quite a task. By Mathew's own admission: "It was really, really difficult. There are a million different combinations and ways to take it even within the tight timescale, then there is the mastering of each sample. But it was still really good fun."

And so it proves. The two tracks Mathew has crafted for this week's show are outstanding. Especially the final track, Tawelu, which is one of the finest pieces of music it's been my pleasure to broadcast this year. And - like I say - I believe that this is the first time that this has been done. Of course, firsts mean nothing if they have no quality or value. But this session has both. In overflowing vats.

Elsewhere, Alan Holmes reveals the fascinating story (of the blues) behind Laurie Gane, head honcho at Bethesda's world-renowned Bryn Derwen studios. A story that takes in Clapton and Captain Beefheart, and features a damn fine piece of music too.

Lara Catrin translates some rather beautiful, festive Meic Stevens.

Ben Hayes doffs his tweed hat to Frank Zappa.

And there is music: fascinating, beautiful, twinkling, inspirational music from all over Wales. Most of it is new. All of it is ace.

Welsh demos should be mailed (as high quality mp3s or download links) to themysterytour@gmail.com or posted to:

Adam Walton
BBC Radio Wales
Library & Arts Centre
Rhosddu Road
Wrexham
LL11 1AU

Thanks for listening/diolch am wrando, have an excellent music-filled week.

Adam

HALF MAN HALF BISCUIT (Birkenhead)
Corgi Registered Friends

EUROS CHILDS (Pembrokeshire)
Do More Fun Stuff

JONNY (Pembrokeshire)
Candyfloss

CHANNEL SWIMMER (Cardiff)
Racket (session Track)

(Featuring elements of: Alex Mountaineer's Something Better, Fernhill's Adar, Girls' Alright, Mr Huw's Everything We Do, Telefair's Until the Chain's Come Off, The Gentle Good's Aubade and the Mountaineers' Red Thong.)

YOUNGTEAM (Welsh label)
Daydreamer

Y NIWL (Gwynedd)
Undegpedwar

YOUNG MARBLE GIANTS (Cardiff)
Credit In The Straight World

VVOLVES (Monmouth / Aberystwyth)
Vogue

BAGPIPE WHISKEY (Pembrokeshire)
I Loves You But You Makes Me All Crazeed

D.E.R. COLLECTIVE (Cardiff)
So Fresh

H. HAWKLINE (Cardiff)
Gelly (Lleuad Ii)

ISLET (Cardiff)
Holly (tidal Barrage Remix)

SWEET BABOO (Bangor)
Who Would Have Thought...

FUTURE OF THE LEFT (Cardiff)
I Am The Least Of Your Problems

RATCATCHER (Cardiff)
Chlorophyll

KITTY COWELL (Newport)
We Keep On Partying

FIRST TO DIE (Anglesey)
Unknown Passing

PRETTY PLACES (Llanfair P.G.)
The Fool

LLWYBR LLAETHOG (Blaenau Ffestiniog) Magnetic

KING TUBBY & THE AGGROVATORS (Jamaica)
Lee's Dub

ENEMY WITHIN (Bangor)
So Bad The Blues

LIQUID RIOT ACT (Pontypool)
Flight 101

SEAHAWKS VS BADLY DRAWN BOY (Cardiff)
You Lied (Lies & Manipulations)

PAGAN WANDERER LU (Cardiff)
Straw Donkey

LOS CAMPESINOS (Cardiff)
Kindle A Flame In Her Heart

HAPPY MONDAYS (Salford)
Olive Oil

COLORAMA (Benllech)
Lisa Lan

THE LOVES (Cardiff)
Bubblegum

THE SCHOOL (Cardiff)
Is He Really Coming Home?

HELEN LOVE (Swansea)
I Love Indie Pop

TRWBADOR (Camarthen)
Y Ferch Nadolig

FIONA AND GORWEL OWEN (Bangor)
Cold Song

SUPER FURRY ANIMALS (Wales)
Sarn Helen

GORKY'S ZYGOTIC MYNCI (Pembrokeshire)
Freckles

EUROS CHILDS (Pembrokeshire)
Stop And Call

Y NIWL (Gwynedd)
Saith

CRASH DISCO (Bangor)
Two Bad

MEIC STEVENS (Solva)
Noson Oer Nadolig

ECTOGRAM (Bangor)
All Behind The Witchtower

MOGWAI (Glasgow)
Mexican Grand Prix

FRANK ZAPPA & THE MOTHERS (Zappaworld)
Montana

MATT JOHN (Cardiff)
Bones Of A Tiny Bird

ELLIOTT SMITH (Portland)
Condor Avenue

CHANNEL SWIMMER (Cardiff)
Tawelu (session Track)

(Featuring elements of: Blaktrix's No Drama, Friends Electric's Golden Blood, H. Hawkline's Carreg, Koreless's Up & Down, Mechanical Owl's Make It Last, Melys' When You Put Leonard Cohen On and Soft-Hearted Scientists' Spider Skin.)