Credits for
Swan Songs adapted from
Allmusic.
Hollywood Undead • Aron "
Deuce" Erlichman – lead vocals, bass guitar, keyboards, executive production,
engineering (tracks: 1–2, 4–9 and 11–13, bonus tracks 15–21),
programming (tracks: 1–2, 4–9 and 11–13, bonus tracks 15–21),
mixing (track: 13, bonus tracks 15–21), guitar (track 8) • Jordon "Charlie Scene" Terrell – vocals (tracks: 1, 3–5, 7, 9–11, and 13, bonus tracks 15–19), guitars (on all tracks except on track 8) • Jorel "J-Dog" Decker – vocals (tracks: 1–2, 5–7, and 9–11, bonus tracks 16–20), keyboards (tracks: 1, 6–7, and 11, bonus track 20) • George "
Johnny 3 Tears" Ragan – vocals (tracks: 1–2, 5–7, and 9–14, bonus tracks 15–16, 18–19, and 21) • Dylan "Funny Man" Alvarez – vocals (tracks: 1, 4–5, 9, and 13, bonus tracks 16 and 19) • Matthew "Da Kurlzz" Busek – vocals (tracks: 1–3, 5–6, and 9–11, bonus tracks 16–17 and 19), drums (tracks: 5, 7, 9, and 11, bonus tracks 16–19), percussion (tracks: 5, 7, 9, and 11, bonus tracks 16–19) • Jeffrey "Shady Jeff" Phillips – vocals (bonus tracks 17 and 20)
Additional musicians •
Josh Freese – drums (tracks: 1, 6 and 11) •
Danny Lohner – guitars (tracks: 2, 8 and 14), engineering, production • Paul Pavao – guitar (track 6) • Dean Saenz – drums (track 2) • John Tempesta – drums (track 14)
Production • Don Gilmore – production •
Billy Howerdel – engineering • Mark Kiczula – assistant •
Ben Grosse – mixing • Dave McNair – mastering •
Jonas Åkerlund – art direction, photography • Jason Goad – illustrations • Fox Phelps – assistant • Jimmy Yuma – assistant, production ==Charts==