There he comes
There are multiple artists or bands known as Flashback:

1) Flashback is an a cappella group from Los Angeles, composed of James Charles, Anthony Gargiula, Elizabeth Gaba, Zoe D'Andrea, Reno Selmser, and Noah Davis.

2) A Czech metal band with electronic influences.

3) An unknown producer/group that hail from Chicago, IL, drawing influences from classic 80's television, drug trips, and Carl Sagan. A small handful of dark, synth-heavy releases have been posted on blogs, and an EP is rumored on their Bandcamp website.