Reaper 2.51

Reaper allows you to record, arrange, edit, and render multi-track waveform audio and provides an extensive set of features, though it is not more than 1MB.

Reaper supports ASIO, Kernel Streaming, WaveOut, and DirectSound for playback and recording, it allows you to read WAV, OGG, and MP3 files, record WAV files

And if you thought this was all, you can customize it, creating your favorite themes.

If you like music, you will love Reaper!.