Today's TV offerings

Gareth Malone's All Star Music Quiz (BBC2, regions vary)

FRIDAY is the BBC's annual Music Day, but getting in early on the act - or to get viewers in the mood for it - is this one-off quiz hosted by the choirmaster.

It features two celebrity teams of varying musical abilities who must answer Malone's questions by playing their responses - it may be a challenge for those watching at home to figure out exactly what they're trying to express... Those taking part are MP-turned-presenter Ed Balls and ex-JLS member JB Gill, both on piano, actor John Thomson (drums), comedians Rob Rouse and Pippa Evans on guitar, and saxophonist Yolanda Brown - we're guessing that she, as a professional, will have little difficulty in getting her points across.

Manson: The Lost Tapes (ITV, 9pm)

IT'S almost 50 years since members of The Family, a cult formed and controlled by Charles Manson, murdered seven people in California, including Sharon Tate, the heavily pregnant wife of film director Roman Polanski.

This two-part programme offers a chilling insight into how Manson managed to brainwash a group of young people into following him before ordering them to kill. Its makers have used a vast archive of previously unpublished material collected by film-maker Robert Hendrickson, who'd had exclusive access to Manson's cult. Among the most revealing moments are interviews with cult members Catherine 'Gypsy' Share and Dianne 'Snake' Lake, as well as prosecutor Stephen Kay and FBI criminal profiler John Douglas, who were involved in the original case.

Hollywood's Brightest Bombshell: The Hedy Lamarr Story (BBC4, 9pm)

SHE was once billed as the most beautiful woman in the world, but Hollywood movie star Hedy Lamarr has another claim to fame - in the 1940s, she co-invented the wireless technology which is still used today in Bluetooth.

This documentary tells the story of how the Austrian-born actress left her fascist-sympathiser husband in the 1930s and was signed up by MGM. She would go on to marry five more times, but her most intriguing partnership was with composer George Antheil, with whom she developed a radio guidance system for Allied torpedoes during the Second World War.

Press (BBC1, 9pm)

AMINA feels defeated in the immediate wake of the Joshua West scandal.

Holly, angered by her editor's floundering leadership, ignores Amina's request to write a front-page apology on behalf of The Herald, and presses on privately with her investigation into the high-profile entrepreneur's sexual past. On the other side of the square, amid a flurry of phone calls from women reporting their own experiences of West's abuse of power, Duncan is shocked to learn that The Post has been banned from the daily press conference at Downing Street.

Michael Palin in North Korea (C5, 9pm)

MICHAEL leaves Pyongyang and is put under the protection of armed guards as he is shown the Joint Security Area on the border with South Korea, where he has a tense exchange with a lieutenant from the Korean People's Army about the Korean War and the DPRK's nuclear weapons programme.

He also travels to the east coast of the country and the seaside town of Wonsan, where he sees a massive tourist resort being constructed on the beach, although the nearby new international airport for an expected influx of passengers remains eerily empty.

No Offence (C4, 9pm)

ELECTION day looms and local-girl-done-good Caroline McCoy is leading the polls in the wake of the failed assassination attempt on her, but the murder of an elderly Jewish man stokes the fear that Beckett's escalating violence will end in a second attempt on McCoy's life.

Having gained undercover operative Bonnie's trust, Beckett is within reaching distance for the Friday Street team. But a threat against Miller's family draws him into the fight against Albion. Paul Abbott's drama, starring Joanna Scanlan.