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Dialectrix
Dialectrix
Australian singer
1
Urthboy
Urthboy
Australian Hip-Hop artist
2
The Herd
The Herd
Australian hip hop group
3
Bliss n Eso
Bliss n Eso
Australian hip hop trio
4
Fat Joe
Fat Joe
American rapper from New York
5
Estelle
Estelle
British singer-songwriter
6
Sean Kingston
Sean Kingston
Jamaican-American singer
7
Hermitude
Hermitude
8
Nas
Nas
American rapper, record executive, entrepreneur and investor from New York
9
Hilltop Hoods
Hilltop Hoods
Australian hip-hop group
10
The Dirty Heads
The Dirty Heads
American reggae band
11
Daara J
Daara J
musical duo
12
Roots Manuva
Roots Manuva
rapper
13
Matisyahu
Matisyahu
American musician
14
Tego Calderón
Tego Calderón
Puerto Rican rapper
15
U-Roy
U-Roy
Jamaican musician
16
Minmi
Minmi
Japanese singer
17
Sweatshop Union
Sweatshop Union
Canadian hip hop collective
18
El-P
El-P
American record producer and rapper
19
Brethren
Brethren
Australian hip-hop group
20
Wu-Tang Clan
Wu-Tang Clan
American rap group
21
Freundeskreis
Freundeskreis
German hip hop band
22
Snoop Dogg
Snoop Dogg
American rapper, singer, actor and record producer
23
Lupe Fiasco
Lupe Fiasco
American rapper from Illinois
24
Mary J. Blige
Mary J. Blige
American singer-songwriter, record producer, and actress from New York
25
Damian Marley
Damian Marley
Jamaican singer
26
Empire ISIS
Empire ISIS
Singer, Songwriter, Activist
27
Boogie Down Productions
Boogie Down Productions
American hip-hop group
28
Keri Hilson
Keri Hilson
American singer, songwriter and actress from Georgia
29
Sublime
Sublime
American ska punk band
30
LL Cool J
LL Cool J
American rapper, record producer, and actor
31
Everton Blender
Everton Blender
Jamaican reggae singer
32
9th Wonder
9th Wonder
American rapper, DJ and producer
33
Kid Sister
Kid Sister
American rapper
34
TZU
TZU
35
Necro
Necro
American rapper and actor
36
Dom Kennedy
Dom Kennedy
American rapper from California
37
Brisco
Brisco
rapper
38
DJ Khaled
DJ Khaled
American DJ, record executive, record producer, and media personality
39
Gorillaz
Gorillaz
English virtual band
40
Mobb Deep
Mobb Deep
American hip hop duo
41
Kardinal Offishall
Kardinal Offishall
Canadian rapper, record producer, DJ, and record executive
42
Havoc
Havoc
American rapper and record producer
43
Dr. Dre
Dr. Dre
American rapper, record producer, and entrepreneur
44
Jonzun Crew
Jonzun Crew
electro and early funk–hip hop group
45
The Movement
The Movement
American reggae band
46
Spice
Spice
Jamaican musician
Intro
Genres
Record Labels

Astronomy Class are an Australian hip-hop / reggae group from Sydney. The group comprises Ozi Batla (Shannon Kennedy), Sir Robbo (Shane Roberts) and Chasm (Chris Hamer-Smith).

Kennedy is a member of The Herd, whilst Roberts is a member of Frigid and prog, downtempo and Krautrock band Tooth.