Since disbanding the group in the summer of 1999, Alexander has written and produced songs for many artists, including Ronan Keating (e.g. co-producing and co-writing the album "Destination"), Sophie Ellis-Bextor, Enrique Iglesias, Texas, Geri Halliwell, S Club 7, Melanie C, Mónica Naranjo, Rod Stewart, Hanson and fellow ex-New Radical Danielle Brisebois. Most noteworthy was the song "The Game of Love" by Santana and Michelle Branch, which earned Alexander a Grammy Award for Best Pop Collaboration with Vocals at the 45th Annual Grammy Awards.