| 1 | A | B | C | D | E | F | G | H | I | J | K |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | MKTO - As lead artist |  |  |  |  |  |  |  |  |  |  |
| 3 | Title | Year | Peak chart positions | Peak chart positions | Peak chart positions | Peak chart positions | Peak chart positions | Peak chart positions | Peak chart positions | Certifications | Album |
| 4 | Title | Year | AUS | CAN | NL | NZ | SWE | UK | US | Certifications | Album |
| 5 | "Thank You" | 2012 | 2 | — | 37 | 7 | — | — | — | ARIA: 4× Platinum RMNZ: Platinum | MKTO |
| 6 | "Classic" | 2013 | 9 | 61 | 64 | 8 | 7 | 24 | 14 | ARIA: 3× Platinum BPI: Platinum IFPI SWE: Platinum RMNZ: Platinum RIAA: Platinum | MKTO |
| 7 | "God Only Knows" | 2013 | 11 | — | — | 19 | — | — | — | ARIA: Platinum RMNZ: Gold | MKTO |
| 8 | "American Dream" | 2014 | 40 | — | — | 12 | — | — | — | ARIA: Gold RMNZ: Gold | MKTO |
| 9 | "Bad Girls" | 2015 | 80 | — | — | — | — | — | — | - | Bad Girls EP |
| 10 | "Hands Off My Heart/Places You Go" | 2016 | — | — | — | — | — | — | — | - | Non-album singles |
| 11 | "Superstitious" | 2016 | — | — | — | — | — | — | — | - | Non-album singles |
| 12 | "How Can I Forget" | 2018 | — | — | — | — | — | — | — | - | Non-album singles |
| 13 | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. | "—" denotes a single that did not chart or was not released. |

Question: What year did MKTO release their second single "Classic"?
Answer: MKTO released their second single "Classic" in 2013.