British pop singer and songwriter Cathy Dennis released “Too Many Walls” in 1991. The tune was co-written by Anne Dudley, best known for her work with Art Of Noise. The track reached chart positions of US Adult Contemporary #1, US Hot 100 #8, and top 20 in the UK, Ireland, and Canada.
After establishing her own performance career, Dennis went on to write songs for Clay Aiken, Kylie Minogue, and Kelly Clarkson, as well as the chart-toppers “Toxic” by Britney Spears and Katy Perry’s “I Kissed a Girl.”
After an instrumental bridge (2:54 – 3:14), the tune modulates up a whole step.