Timestamps and all the names of the music are below,
Operation #MakeSummonerGreatAgain


TIMESTAMPS:
★☆☆☆☆ / ★★★★★ = Difficulty as a summoner (also taking progression into consideration)
01] King Slime | ★☆☆☆☆ | 2:40
02] Desert Scourge | ★☆☆☆☆ | 3:44
03] Eye of Cthulhu | ★★☆☆☆ | 4:40
04] Crabulon | ★☆☆☆☆ | 6:51
05] Eater of Worlds | ★☆☆☆☆ | 7:54
06] Brain of Cthulhu | ★☆☆☆☆ | 9:13
07] Hive Mind | ★☆☆☆☆ | 9:53
08] Perforator | ★☆☆☆☆ | 12:08
09] Queen Bee | ★☆☆☆☆ | 13:01
10] Skeletron | ★★☆☆☆ | 14:09
11] Slime God | ★★★☆☆ | 16:26
12] Wall of Flesh | ★★☆☆☆ | 18:02
13] Cryogen | ★★☆☆☆ | 21:10
14] Twins | ★★☆☆☆ | 24:20
15] Brimstone Elemental | ★★☆☆☆ | 27:41
16] Skeletron Prime | ★★★☆☆ | 30:34
17] Destroyer | ★★☆☆☆ | 33:17
18] Plantera | ★★★☆☆ | 35:34
19] Calamitas | ★★★★☆ | 38:16
20] Leviathan | ★★★★☆ | 40:58
21] Astrum Deus| ★★☆☆☆ | 44:54
22] Astrageldon Slime | ★☆☆☆☆ | 47:23
23] Golem | ★★☆☆☆ | 48:03
24] Plaguebringer Goliath | ★★★★★ | 49:12
25] Duke Fishron | ★★★★★ | 52:50
26] Ravager | ★★☆☆☆ | 56:02
27] Lunatic Cultist | ★★☆☆☆ | 57:28
28] Moon Lord | ★★☆☆☆ | 58:33
29] Profaned Guardians | ★☆☆☆☆ | 1:00:00
30] Providence | ★★★☆☆ | 1:01:16
31] Signus | ★★☆☆☆ | 1:02:43
32] Stormweaver | ★★☆☆☆ | 1:03:48
33] Ceaseless Void | ★★☆☆☆ | 1:04:19
34] Polterghast | ★★☆☆☆ | 1:05:15
35] Devourer of Gods | ★★★☆☆ | 1:06:35
36] Bumblebirb | ★☆☆☆☆ | 1:10:48
37] Yharon | ★★★★★ | 1:11:45
38] Supreme Calamitas | ★★★☆☆ | 1:18:57
39] The Lorde | ★★☆☆☆ | 1:22:44

Music used:
Intro / Disclaimer: DM Dokuro Antarctic Reinforcement (structured mix)
King Slime & Desert Scourge: DM Dokuro Guardians of the former Seas
Eye of Cthulhu: DM Dokuro Boss 1 remix
Crabulon: DM Dokuro Infestation
Eater of Worlds & Brain of Cthulhu: Ansia Orchestra Pride
Hive Mind: DM Dokuro Filthy Mind
Perforator: DM Dokuro Blood Coagulant
Skeletron: Danger 6_24
Slime God: DM Dokuro Return to Slime
Cryogen: DM Dokuro Antarctic Reinforcement
Twins: Metal Gear Rising OST Im My Own Master Now
Brimstone Elemental: DM Dokuro Left Alone
Skeletron Prime: Metal Gear Rising OST Collective Consciousness
Destroyer: Ansia Orchestra Pride
Calamitas: DM Dokuro: Raw Unfiltered Calamity
Leviathan: DM Dokuro: Sirens Call & Forbidden Lullaby
Astrum Deus & Astrageldon Slime: DM Dokuro Pest of the Cosmos
Plaguebringer Goliath: DM Dokuro Fly of the Beezlebub
Duke Fishron: DM Dokuro: Boss 1 remix
Profaned Guardians % Providence: DM Dokuro Unholy Insurgency
Signus, Stormweaver & Ceaseless Void: DM Dokuro Theme of The Sentinels
Polterghast DM Dokuro: Feral Amalgamation
Devourer of Gods (Phase 1): DM Dokuro Cave Story Arranged, Last Battle (Ballos Mix)
Devourer of Gods (Phase 2): DM Dokuro Universal Collapse
Bumblebirb: DM Dokuro Murderswarm
Yharon: DM Dokuro Infernal Catharsis
Supreme Calamitas: Ansia Orchestra – Mercury
The Lorde: FantomenK Det var han