the same time as writing songs, and that "They knew what they wanted to write about, right from day one. You couldn't force your musical ideas upon them." From the onset, the Spice Girls established a strict 50–50 split of the publishing royalties between them and their songwriting collaborators. As with their vocal arrangements, they were also adamant on maintaining parity between themselves in the songwriting credits. Sinclair said: The deal between themselves was a strict five-way split on their share of the songwriting royalties on all songs irrespective of what any one member of the group had (or had not) contributed to any particular song. Apart from ease of administration, this was also a symbolic expression of the unity which was so much part and parcel of the Spice philosophy. Sinclair identified Halliwell as a major source of ideas for the Spice Girls' songs, including many of the concepts and starting points for the group's songs. Tim Hawes, who worked with the group when they were starting out, said Halliwell's strength was in writing lyrics and pop hooks, and estimated that she was responsible for 60–70% of the lyrics in the songs he worked on. The group's collaborators credit the other members of the group as being more active than Halliwell in constructing the melodies and harmonies of their songs. Matt Rowe, who wrote several songs with the Spice Girls, agreed that Halliwell was particularly good when it came to writing lyrics and credits the lyrics for "Viva Forever" to her. He felt that all five members had contributed equally to the songwriting. Cultural impact and legacy Pop music resurgence and girl group boom The Spice Girls broke onto the music scene at a time when alternative rock, hip-hop and R&B dominated global music charts. In the group's first-ever interview in May 1996, Halliwell told Music Week: "We want to bring some of the glamour back to pop, like Madonna had when we were growing up. Pop is about fantasy and escapism, but there's so much bullshit around at the moment." The modern pop phenomenon that the Spice Girls created by targeting early Millennials was credited with changing the music landscape by reviving the pop music genre, bringing about the global wave of late-1990s and early-2000s teen pop acts such as the Backstreet Boys, Britney Spears, Christina Aguilera and NSYNC. The Spice Girls have also been credited with paving