ABBA were one of the first pop groups to exploit the promotional video as a vehicle for publicising their music across the globe. ABBA--The Definitive Collection provides an audio-visual timeline of how their promos developed over a 10-year period from the mid-1970s to the early 80s. The first ABBA videos were simple recordings of the band miming to their songs in a studio ("Waterloo" and "Ring Ring"); then, for "Mamma Mia" and "SOS", the style was replaced by something more adventurous, focusing on the four grouped together in rival pairs. As technology and the group evolved so did their promo films, with more recent examples shot on videotape and incorporating post-production special effects and outdoor locations ("One Of Us" and "Head over Heels"). Director Lasse Hallstrom has since made the transition from these relatively low-budget vehicles to Hollywood success with Chocolat and The Shipping News. If ABBAs early efforts look a little primitive compared to big-budget modern music promos, the songs themselves now sound even better than ever, having been digitally re-mastered in 24-bit format. As well as featuring the digitally re-mastered promos for the majority of their single releases, exclusive previously unreleased material is also incorporated here, such as the extended original mix of "On and On and On". On the DVD: ABBA--The Definitive Collection on DVD squeezes in all 30 videos, plus five bonus tracks which include the promos for the Spanish-language versions of "I Have a Dream", "Happy New Year" and "When All is Said and Done". The video for the never released "When I Kissed the Teacher" is also included, too, as is a camp recording of "Dancing Queen" filmed at a gala tribute for Swedens King and Queen. The 20-minute picture gallery is an excellent and comprehensive photographic record of the group through the years. Background information about all of the material, is discussed in the accompanying biographical booklet.--John Galilee