Complex sentence: Howe sang with a local band called Shy who had one minor hit single in the UK but he quickly quit, seeking a harder rock band and had a brief stint with the NWOBHM group White Spirit, having replaced their recently departed singer Bruce Ruff.
Split into simpler sentences: Howe sang with a local band called Shy who had one minor hit single in the UK but he quickly quit, seeking a harder rock band. He had a brief stint with the NWOBHM group White Spirit, having replaced their recently departed singer Bruce Ruff.