There are 2 bands with the name Sounder:

1.) Sounder is a Brazilian thrash metal band formed in São Paulo, São Paulo in 2006.

Discography:

The Thrash Metal Live Demo, 2006
Hell Hymns Full-length, 2008

2.) A british '77 punk , power pop band who released a two song EP. The tracks are 'get down on your knees' and 'bus stop romance'. The group renamed themselves Sneaky Feelin's. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.