Sayonara is a simple, lightweight and quite fast audio player only for Linux which is written in C++, it also supportet by Qt framework. For audio backend it uses gstreamer. It carries a lot of feature to manage big audio collections. While developing this program they focused on it's performance, it consumes very low CPU and memory.
One of Sayonara's goals are intuitive and easy usability never leading to the impression you are using an unnecessary bloated program therefore it should be able to compete with the most popular music players. It has a lot of features like a library, id3 tag editor, equalizer, lastfm radio, lastfm scrobbler, stream recorder and so on..