Sleepwalking is the second release by Ammonia, released in March 1995. The EP reached No. 86 on the Australian singles chart.Ammonia formed in 1992 with Dave Johnstone and Allan Balmont. The guitarist and drummer were then performing under the name Fuzzswirl. It wasn't until 1993 that bassist Simon Hensworth joined the group and the band's name was changed to Ammonia. The group's success was due mostly to its hometown style of recording and word of mouth.