Xhosa language (Wikipedia)
Xhosa (English: /ˈkɔːsə/ or /ˈkoʊsə/; Xhosa: isiXhosa [isikǁʰɔ́ːsa]) is a Nguni Bantu language with click consonants (“Xhosa” begins with a click) and one of the official languages of South Africa. It is spoken by approximately 7.6 million people, or about 18% of the South African population. Like most other Bantu languages, Xhosa is a tonal language; the same sequence of consonants and vowels can have different meanings, depending on intonation. Xhosa has two tones: high and low.
Xhosa is written with the Latin alphabet. Three letters are used to indicate the basic clicks: c for dental clicks, x for lateral clicks and q for post-alveolar clicks (for a more detailed explanation, see the table of consonant phonemes below). Tones are not normally indicated in writing.