Mamamoo's Solar released a cover medley of TOP 15 Kpop songs of 2020. 
Here is a full list of songs covered by Solar with the timestamps:

0:06 Dynamite (BTS)
0:14 Beach again (SSAK3)
0:23 Any song (Zico)
0:30 NUNA NANA (Jessi)
0:32 ON (BTS)
0:39 Maria (Hwasa)
0:58 Ddun ddun ddun (Solar)
1:02 How you like that (Blackpink)
1:18 Don’t touch me (Refund sisters)
1:35 Nonstop (Oh my girl)
1:43 Eight (IU feat. Suga)
1:59 When we disco (JYP with Sunmi)
2:14 Lovesick girls (Blackpink)
2:31 VVS (Feat. JUSTHIS) (Prod. GroovyRoom)
2:47 Dingga (Mamamoo)